Details:

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

Product Description：

Product Name	(R,R)-N,N′-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine
Cas No.	135616-40-9
Molecular Formula	C36H54N2O2
Molecular Weight	546.84
Appearance	Yellow powder
Purity	98% Min
Boiling point	615.2 °C at 760 mmHg
Melting point	205-207 °C(lit.)
Flash point	421.6°C
Refractive index	1.547

Product Description

(R,R)-N,N′-Bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine, also known as (R,R)-Jacobsen's ligand, is a chiral ligand that was developed by Dr. Eric N. Jacobsen, a prominent American chemist. It is a valuable catalyst in asymmetric synthesis, a branch of chemistry focused on the creation of molecules with specific spatial arrangements, particularly mirror-image isomers (enantiomers).

The ligand is a complex formed by coordinating two 3,5-di-tert-butylsalicylaldehyde groups to a 1,2-cyclohexanediamine core. This unique arrangement imparts chirality to the ligand, allowing it to selectively influence the stereochemistry of certain chemical reactions. The two salicylaldehyde groups provide a chiral environment around the metal center, facilitating enantioselective transformations.

(R,R)-Jacobsen's ligand is widely used in catalytic asymmetric reactions, such as epoxidation, cyclopropanation, and aminohydroxylation of alkenes. The ligand plays a crucial role in these reactions by promoting the formation of chiral products with high enantioselectivity. Its applications have a significant impact on the synthesis of pharmaceuticals, agrochemicals, and other complex molecules where chirality is essential for their biological activity.

Overall, (R,R)-Jacobsen's ligand is a powerful tool in modern organic synthesis, enabling chemists to create enantiomerically enriched compounds efficiently and selectively.

Fetures

1. Chirality: (R,R)-Jacobsen's ligand is chiral, meaning it has a non-superimposable mirror image. This property allows it to induce chirality in metal-catalyzed reactions, leading to the formation of enantiomerically enriched products.

2. Asymmetric Induction: The ligand demonstrates excellent enantioselectivity in various asymmetric reactions. It can direct the reaction to produce one specific enantiomer of a chiral product with high selectivity, making it a valuable tool in asymmetric synthesis.

3. Versatility: (R,R)-Jacobsen's ligand is widely applicable in a range of asymmetric transformations, including epoxidation, cyclopropanation, and aminohydroxylation of alkenes. Its versatility enables the synthesis of diverse chiral compounds with various functionalities.

4. Catalytic Efficiency: The ligand acts as a catalyst in the reactions, and only a small amount is required to achieve significant enantioselectivity. This catalytic efficiency makes it cost-effective and environmentally friendly.

5. High Yield: The use of (R,R)-Jacobsen's ligand often results in high yields of the desired chiral products, ensuring efficient and practical synthetic processes.

6. Steric and Electronic Control: The unique structure of the ligand provides both steric and electronic control over the reaction, influencing the selectivity of the reaction and promoting the formation of specific enantiomers.

7. Synthetic Advantages: (R,R)-Jacobsen's ligand allows chemists to access enantiomerically enriched compounds in a more straightforward and efficient manner than traditional resolution methods.

Applications

1. Asymmetric Epoxidation
The ligand is widely used in asymmetric epoxidation reactions of alkenes, where it enables the synthesis of chiral epoxides with high enantioselectivity.

2. Asymmetric Cyclopropanation
(R,R)-Jacobsen's ligand is employed in asymmetric cyclopropanation reactions, allowing the selective formation of chiral cyclopropanes.

3. Asymmetric Aminohydroxylation
It is utilized in asymmetric aminohydroxylation reactions of alkenes, leading to the preparation of enantioenriched aminohydrin derivatives.

4. Asymmetric Aziridination
The ligand is applied in asymmetric aziridination reactions, which result in the formation of chiral aziridine products.

5. Enantioselective Transformations
(R,R)-Jacobsen's ligand is employed in various other enantioselective transformations, including dihydroxylation and amination reactions.

6. Pharmaceutical Synthesis
Due to its ability to induce chirality in reactions, the ligand plays a crucial role in the synthesis of chiral intermediates and building blocks for pharmaceuticals and other bioactive compounds.

7. Agrochemical Synthesis
The ligand is used in the preparation of chiral agrochemicals and other specialty chemicals.

8. Material Science
(R,R)-Jacobsen's ligand can also be employed in the preparation of chiral materials for applications in optoelectronics and catalytic materials.

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!  

 

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 WEIFANG, China. It is only two hours from QINGDAO.  

6. Can i get some samples  
  Yes, we can supply free sample, but the shipping cost be paid by our customers. 

7. 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,  

8. 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. 

9. How long is lead time

We deliver goods within 3 days for small order, 7-10 days for bulk order.

 

10. 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.