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(S)-(-)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl

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Origin: China

Cas No: 76189-56-5

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 76189-56-5 Formula: C44H32P2 Molecular Weight: 622.67200

Description

BINAP (2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) is an organophosphorus compound. This chiral ligand is widely used in asymmetric synthesis. It consists of a pair of 2-diphenylphosphinonaphthyl groups linked at the 1 and 1´ positions. This C2-symmetric framework lacks a stereogenic atom, but has axial chirality due to restricted rotation (atropisomerism). The barrier to racemization is high due to steric hindrance, which limits rotation about the bond linking the naphthyl rings. The dihedral angle is approximately 90˚.

Basic Info

Chemical Name	(S)-(-)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl
Synonyms	BINAP; RAC-BINAP;
CAS No.	76189-56-5
Molecular Formula	C44H32P2
Molecular Weight	622.67200
PSA	27.18000
LogP	9.17640

Properties

Appearance & Physical State	white to light yellow crystalline powder
Boiling Point	724.3ºC at 760 mmHg
Melting Point	239-242ºC
Flash Point	419ºC
Storage Condition	Room temperature.