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Merck
CN

638439

2-(二叔丁基膦)联苯

97%

别名:

(2-联苯基)二-叔丁基膦, 2-(二-叔-丁基膦基)联苯, JohnPhos

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关于此项目

线性分子式:
C6H5C6H4P[C(CH3)3]2
化学文摘社编号:
分子量:
298.40
UNSPSC Code:
12352002
NACRES:
NA.22
PubChem Substance ID:
MDL number:
Beilstein/REAXYS Number:
8322131
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Quality Level

assay

97%

reaction suitability

reaction type: Cross Couplings, reagent type: ligand
reaction type: Buchwald-Hartwig Cross Coupling Reaction, reagent type: ligand
reaction type: C-X Bond Formation, reagent type: ligand
reaction type: Heck Reaction, reagent type: ligand
reaction type: Suzuki-Miyaura Coupling

mp

86-88 °C (lit.)

functional group

phosphine

SMILES string

CC(C)(C)P(c1ccccc1-c2ccccc2)C(C)(C)C

InChI

1S/C20H27P/c1-19(2,3)21(20(4,5)6)18-15-11-10-14-17(18)16-12-8-7-9-13-16/h7-15H,1-6H3

InChI key

CNXMDTWQWLGCPE-UHFFFAOYSA-N

General description

JohnPhos 是Buchwald空间庞大的二芳基膦配体。它是一种反应性二烷基联芳基膦配体,可催化碳-氮键形成反应。带有JohnPhos作为配体的金催化剂的配位化学已通过NMR光谱进行了研究。

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Application

钯催化的Stille交叉偶联反应所用的大位阻联芳基膦配体。
JohnPhos是一种庞大的膦配体,在以下研究中被用作催化剂:
  • 未活化的内部炔烃的氢苯氧基化。
  • 微波介导的苄基溴的Suzuki-Miyaura交叉偶联。
  • 新型咪唑并[1,2-a]吡啶药物的合成,其对疱疹病毒具有强效活性。
  • 将乙烯基溴与肼进行Barluenga′s偶联。
  • Pd催化的α,α--二取代-3-噻吩甲醇的2,3-二芳基化(通过裂解CH和CC键)。
作为配体,其用于芳基卤化物和芳基三氟甲磺酸酯的胺化。

可催化:
  • 二烷氧基苯甲酸与二芳基二硫化物或二芳基二硒醚的脱羧交叉偶联
  • 通过N-烯丙基-N-芳基脲的分子内加氢胺化,立体选择性制备咪唑烷酮
  • 烯烃与芳基氯化物的区域选择性芳基化
  • 用于合成多不饱和大环内酯的交叉偶联反应
  • 区域选择性 O-烷基化反应
  • Sonogashira型交叉偶联


存储类别

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)



历史批次信息供参考:

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商品

Buchwald phosphine ligands for C-C, C-N, and C-O bond formation.

Buchwald and coworkers develop versatile phosphine ligands for Pd-catalyzed C–N bond formation; enhancing synthetic reactions for 20 years.

Buchwald Phosphine Ligands

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The Catalexis platform enhances catalysis by digitally optimizing catalyst selection to identify the most effective phosphine ligands for cross-coupling reactions.

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Steven W McDaniel et al.
Tetrahedron letters, 52(43), 5656-5658 (2011-10-04)
A procedure for benzylic Suzuki-Miyaura cross-coupling under microwave conditions has been developed. These conditions allowed for heterocyclic compounds to be coupled. Optimum conditions found were Pd(OAc)(2), JohnPhos as the catalyst and ligand, potassium carbonate as base, and DMF as the
Alexander Zhdanko et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(46), 14732-14744 (2012-09-29)
Coordination chemistry of gold catalysts bearing eight different ligands [L=PPh(3), JohnPhos (L2), Xphos (L3), DTBP, IMes, IPr, dppf, S-tolBINAP (L8)] has been studied by NMR spectroscopy in solution at room temperature. Cationic or neutral mononuclear complexes LAuX (L=L2, L3, IMes
Marcia E Richard et al.
Beilstein journal of organic chemistry, 9, 2002-2008 (2013-11-10)
A range of arylgold compounds have been synthesized and investigated as single-component catalysts for the hydrophenoxylation of unactivated internal alkynes. Both carbene and phosphine-ligated compounds were screened as part of this work, and the most efficient catalysts contained either JohnPhos



全球贸易项目编号

货号GTIN
638439-25G04061833399354
638439-100G04061833301548
638439-1G04061832726700
638439-5G04061833357019