一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
+1 (818) 612-2111
RFQ
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

RFQ
skype
MY Account
Top
Postion:Product Catalog >Chemical Reagents>Organic reagents>Phosphine ligand>(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl
(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl
  • (R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl
  • (R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl

(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl

Price $19.5
Package 25KG
Min. Order: 1KG
Supply Ability: 36 MT per month
Update Time: 2020-06-02

Product Details

Product Name: (R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl CAS No.: 76189-55-4
Min. Order: 1KG Purity: 99.50% in stock CAS 76189-55-4
Supply Ability: 36 MT per month Release date: 2020/06/02
Contact person: Ms Ella manager mailbox: chemwill_asia@126.com;chemwill@hotmail.com

Product no. chemwillR22BD11B91557

highly quality and immedaite delivery

 

R-BINAP 76189-55-4  (R)-(+)-BINAP

(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl Manufacturer High quality Best price In stock factory CAS 76189-55-4

(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl CAS 76189-55-4

(R)-(+)-BINAP; (R)-BINAP; R-BINAP

 

Name:    (R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl
Synonyms:    (R)-(+)-2,2'-Bis(diphenylphosphino)-1;(+/-)-2,2'-Bis(diphenylphosphino)-1,1'-dinaphthalene (BINAP);(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-biphthyl;(R)-BINAP,99%e.e.;(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl for synthesis;(+/-)-(1,1'-BINAPHTHALENE-2,2'-DIYL)BIS(DIPHENYLPHOSPHINE);(+/-)-2,2'-BIS(DIPHENYLPHOSPHINO)-1,1'-BINAPHTHALENE;(+/-)-BINAP
CAS:    76189-55-4
MF:    C44H32P2
MW:    622.67
EINECS:    616-304-7
Product Categories:    BINAP Series;Chiral Phosphine;chiral;Biphenyl derivatives;Aromatics;Catalyst;Chiral Reagents;Asymmetric Synthesis;Phosphine Ligands;Synthetic Organic Chemistry;Adamantanes;B (Classes of Boron Compounds);Ligands;N-Heterocyclic Carbene Ligands;-;Tetrafluoroborates;Peptide;Chiral Compound
Mol File:    76189-55-4.mol
(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl Structure

(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl Chemical Properties

 

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?.

Appearance & Physical State     white to light yellow crystal powder
Boiling Point     724.3ºC at 760 mmHg
Melting Point     239-242ºC
Flash Point     419ºC
Refractive Index     235 ° (C=0.3, Toluene)
Water Solubility     insoluble
Storage Condition     Room temperature.
Safety Info
Safety Statements     S26-S37/39
HS Code     2902909090


Melting point     283-286 °C(lit.)
alpha     240 º (c=0.3, toluene)
refractive index     235 ° (C=0.3, Toluene)
storage temp.     Room temperature.
form     Powder
color     White to cream-white
optical activity    [α]20/D +222°, c = 0.5% in benzene
Water Solubility     insoluble

HS Code     29319090
MSDS Information

(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl Usage And Synthesis
Reaction    

    (R)-BINAP or (R)-Tol-BINAP can be combined with dichloro(1,5-cyclooctadiene)ruthenium to form precursors to NOYORI CATALYST SYSTEMS. These systems exhibit very high catalytic activity and enantioselectivity in the hydrogenation of a wide range of substrates. NOYORI CATALYST SYSTEMS have been shown to effect highly enantioselective hydrogenation of functionalized ketones where the substituents are dialkylamino, hydroxy, siloxy, carbonyl, ester, amide or thioester.


Chemical Properties    white to light yellow crystal powde
Uses    Chiral ligand for metal mediated asymmetric catalysis.
(R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl Preparation Products And Raw materials
Raw materials    Etanol-->Ethyl acetate-->Methanol-->Dichloromethane-->N,N-Dimethylformamide-->Azabenzene-->Triphenylphosphine-->Trifluoroacetic anhydride-->Nickel(II) chloride hexahydrate-->Triethylenediamine-->1,2-Bis(diphenylphosphino)ethane-->(R)-(+)-1,1'-Bi-2-naphthol-->Diphenylphosphine
Preparation Products    (3S,4R)-4-Acetoxy-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one

Company Profile Introduction

Over 30 years experience in the chemical industry, Chemwill Asia Industrial co.,Ltd is one of the leading GMP complied manufacturer of Organic compounds in CHINA. Our main production base is located in Jiangsu province. We produce a wide range of organics including Active pharmaceutical ingredients(APIs), Veterinary, Indole derivatives, Aromatics, Fluorine, Boronic acids, organocatalysts, chiral building blocks, heterocyclic compounds. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place. Our advantageous business including: - Intermediate using for Pharmaceuticals - Active ingredient for Pharmaceutical and animal health (Human APIs and Veterinary APIs) - Fluorine, boronic acids, unnatural amino acids, cross linkers,chiral building blocks - Intermediate using for advanced performance materials - Monomer & polymers, high performance, photosensitive and specialty chemicals - Electro chemical materials(Lithium Battery, Photoresist, semiconductor, IT-related chemicals) * Custom synthesis from the laboratory scale to commercial production. * Contract research, custom manufacturing and contract-manufacture Ms Ella Lee - Deputy Sales Manager Phone: +86 -21-51086038 Email: chemwill_asia@126.com;chemwill@hotmail.com To learn more about our factory, PLS visit: www.chemwill.com

Recommended supplier

Product name Price   Suppliers Update time
VIP6Y
Henan Research New Materials Co., Ltd.
2025-04-12
Hebei Chuanghai Biotechnology Co., Ltd
2024-11-29
$10.00
VIP3Y
Henan Fengda Chemical Co., Ltd
2024-04-26
$230.00
VIP6Y
Shanghai UCHEM Inc.
2023-10-12
VIP4Y
Henan Aochuang Chemical Co.,Ltd.
2022-09-30
VIP5Y
XINXIANG RUNYU MATERIAL CO., LTD.
2021-11-23
VIP7Y
Zhengzhou HQ Material CO.,LTD.
2021-09-22
$15.00
Zhuozhou Wenxi import and Export Co., Ltd
2021-06-27
$1.00
VIP8Y
Career Henan Chemical Co
2018-08-09
  • Since: 2004-09-01
  • Address: BLDG 9,No.235 Sanlin road,Pudong new district,Shanghai,China
INQUIRY
南昌市| 肥乡县| 大丰市| 利川市| 明星| 营山县| 铁岭县| 册亨县| 富阳市| 株洲市| 治多县| 北宁市| 那坡县| 纳雍县| 宜宾县| 天峨县| 资中县| 独山县| 凤冈县| 禄丰县| 思茅市| 通城县| 无为县| 香河县| 大丰市| 九龙城区| 台安县| 客服| 泸西县| 孝感市| 应用必备| 乡宁县| 保山市| 西畴县| 克什克腾旗| 新安县| 皮山县| 衡阳县| 军事| 盘山县| 永州市|