Hebei Nengqian Chemical Import and Export Co., LTD
Assessed Supplier Enterprise Certification
- Assessed
Supplier - 4th
years
Assessed Supplier Enterprise Certification
Product Certification&
Enterprise Certification
Country: 
China (Mainland)
Business Type:Trading Company
Tel: +86 19831957301
Mobile:
Tel: +86 19831957301
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: No.1722, Block C, Yangguang Xinzhuo Plaza, 256 Renmin West Road, Fuxing District, Handan City, Hebei Province
MaxCard:
Ms.AnnaCAS NO.135616-36-3
Pharmaceutical grade(1-50)KilogramPharmaceutical grade(51-99)Kilogram
Our Advantage
Rich Experience
Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term.
Quality service
Company cooperates with research institutes. We strictly control the process of raw materials up to finished product.
24 hour service
Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage.
High quality
Dedicated to serving customers first, we provide reasonable prices, high quality products.
Our company specializes in processing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents,
Our company has a number of sales team, service and information feedback vertical integration of a sound marketing network, products are sold throughout the country and exported to South Asia, Europe, America, Africa and other more than 20 countries and regions.
Companies adhering to the "pursuit of quality, innovation and development" business philosophy, to serve as a foundation, for the survival by the quality, seek development by science and technology, adhere to quilty comes first,fair price,good sense of customer service and responsibility. in the future hebei Nengqian import and export trade Co.,Ltd will always hold "integrity, innovation" business philosophy, to achieve honesty management, on the way of specialization, internationalization, Keep moving!
Product Description
(S,S)-(+)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine, with the CAS number 135616-36-3, is a chiral ligand used in coordination chemistry and catalysis. It is a Schiff base compound formed by the condensation of 3,5-di-tert-butylsalicylaldehyde with 1,2-cyclohexanediamine. The resulting compound exists in two enantiomeric forms: (S,S)-(+)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine and (R,R)-(-)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine, which are mirror images of each other.
This ligand is widely used in asymmetric catalysis due to its ability to coordinate with various transition metals, forming chiral complexes. These complexes can efficiently catalyze a wide range of organic reactions with high enantioselectivity, making them valuable in the synthesis of complex molecules and pharmaceutical intermediates.
As a chiral ligand, (S,S)-(+)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine plays a significant role in asymmetric synthesis, contributing to the advancement of various chemical processes in the field of organic chemistry. Researchers and chemists frequently employ this compound to design and develop new and efficient catalytic systems for the preparation of enantiomerically pure compounds.
Fetures
1. Chiral Ligand: The compound is a chiral ligand, meaning it has a specific three-dimensional arrangement of atoms that gives rise to two mirror-image forms (enantiomers).
2. High Enantioselectivity: It exhibits high enantioselectivity when coordinated with transition metals to form chiral complexes. This property is essential for asymmetric catalysis, where the catalyst favors the formation of one enantiomer over the other.
3. Steric Hindrance: The tert-butyl groups attached to the aromatic rings of the ligand provide significant steric hindrance, which enhances its chiral recognition and selectivity in catalytic reactions.
4. Stability: (S,S)-(+)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine and its metal complexes are generally stable under the reaction conditions of various asymmetric catalytic processes.
5. Versatility: The ligand can coordinate with a wide range of transition metals, making it applicable in various asymmetric catalytic reactions, such as asymmetric hydrogenation, allylic substitution, and cyclopropanation.
6. Synthetic Utility: Due to its high enantioselectivity and efficiency in asymmetric catalysis, the compound has become a valuable tool in the synthesis of enantiomerically pure compounds, which are essential in pharmaceuticals, agrochemicals, and other fine chemicals.
Applications
1. Asymmetric Hydrogenation
(S,S)-Salen cobalt(II) is widely used as a chiral ligand in asymmetric hydrogenation reactions. It can efficiently catalyze the hydrogenation of prochiral olefins, leading to the formation of enantiomerically enriched products.
2. Allylic Substitution
The compound is utilized as a ligand in asymmetric allylic substitution reactions. It enables the asymmetric transfer of nucleophiles to allylic substrates, facilitating the formation of chiral compounds with high enantioselectivity.
3. Cyclopropanation
(S,S)-Salen cobalt(II) is employed in asymmetric cyclopropanation reactions. It promotes the formation of chiral cyclopropane derivatives with excellent stereochemical control.
4. Epoxidation
The ligand is utilized in asymmetric epoxidation reactions, enabling the formation of optically active epoxides.
5. Oxidative Amination
(S,S)-Salen cobalt(II) can be employed in asymmetric oxidative amination reactions, facilitating the synthesis of chiral amines with high enantioselectivity.
6. Kinetic Resolution
It can be used in kinetic resolution processes, where a racemic mixture of a substrate is selectively transformed into one enantiomer, leaving the other enantiomer unaffected.
Specifications
| Product Name | (S,S)-(+)-N,N'-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine |
| Cas No. | 135616-36-3 |
| Molecular Formula | C36H54N2O2 |
| Molecular Weight | 546.83 |
| Appearance | Yellow powder |
| Purity | 98% Min |
| Boiling point | 646.3°C at 760mmHg |
| Melting point | 203-206 °C(lit.) |
| Flash point | 115.2°C |
| Refractive index | 1.5300 |
Our advantages:
1, High quality with competitive price:
1) Standard:BP/USP/EP/Enterprise standard
2) All Purity≥99%
3) We are manufacturer and can provide high quality products with factory price.
2, Fast and safe delivery
1) Parcel can be sent out in 24 hours after payment.Tracking number available
2) Secure and discreet shipment.Various transportation methods for your choice.
3) Customs pass rate ≥99%
4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe,
and we have stock in there for transferring.
Our Service:
1. Fast Delivery: We can delivery within 24 hours upon receipt of your payment.
2. Quality can be promised. Hot sell to Worldwide.
3. Payment Terms: T/T,, t/t
4. Free Sample available at any time.
5. Tracking your order at any time. Inform your order's further new situation at any time.
6. Package: Professional packing with professional materials.
Packing:
1. Inner double plastic bags----25kg/Fiber drum (35*35*45cm, GW: 28kg, NW: 25kg);
2. Inner double plastic bags----5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg).
3. Inner double plastic bags----1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg).
P.S.: we accept packaging customization.
Delivery:
1. Stock products are normally shipping within 3 working days.
2. For rush delivery, please contact our sales team for particular arrangement.
Shipping Details:
1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker.
2. Shipping details & shipping documents will be provided and sent by email.
3. We keep tracking the shippment until clients well received.
4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently.
FAQ:
1. Are you a trade company or factory
We are a factory with our own trading company.
2.How do you control the quality
Our factory is equipped with professional technicians to control quality, out inspectors take sample for testing every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other Third-party inspection.
3. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
4. Where is your factory located How can I visit the factory
Our factory located in HEBEI, China.
5. Can i get some samples
Yes, we can supply free sample, but the shipping cost be paid by our customers.
6. How to start orders or make payments
Proforma invoice will be sent first after confirmation of order, enclosed our bank information.Payment by T/T,
7. How to confirm the Product Quality before placing orders
You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples.
You can send us your product specifications and requests,we will manufacture the products according to your requests.
8. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
9. How do you treat quality complaint
First of all, our quality control will reduce the quality problem to near zero. If there is a realquality problem caused by us, we will send you free goods for replacement or refund your loss.