CAS 2136-75-6|2-(triphenyl-$l^{5}-phosphanylidene)acetaldehyde|(Formylmethylene)triphenylphosphorane|2-(triphenyl-$l^{5}-phosphanylidene)acetaldehyde|Formylmethylenetriphenylphosphorane|(Triphenylph...

基本信息

化学结构

分子式

C₂₀H₁₇OP

分子量

304.322141

精确质量

304.10170179

电荷

InChI

InChI=1S/C20H17OP/c21-16-17-22(18-10-4-1-5-11-18,19-12-6-2-7-13-19)20-14-8-3-9-15-20/h1-17H

InChIKey

CQCAYWAIRTVXIY-UHFFFAOYSA-N

Canonic Smiles

O=CC=P(c1ccccc1)(c1ccccc1)c1ccccc1

Isomeric Smiles

P(=CC=O)(c1ccccc1)(c1ccccc1)c1ccccc1

计算属性

JChem

质子受体

质子供体

LogD (pH = 5.5)

5.1108

LogD (pH = 7.4)

5.1108

Log P

5.1108

摩尔折射率

92.7414

极化性

36.27359

极化表面积

17.07

可自由旋转的化学键

里宾斯基五规则

false

数据来源

名称和标识

IUPAC传统名

2-(triphenyl-$l^{5}-phosphanylidene)acetaldehyde 2-(triphenyl-λ⁵-phosphanylidene)acetaldehyde

别名

(Formylmethylene)triphenylphosphoraneFormylmethylenetriphenylphosphorane(Triphenylphosphoranylidene)acetaldehyde甲酰甲撑基三苯基磷(Formylmethylene)triphenylphosphorane(甲酰亚甲基)三苯基正膦2-(Triphenylphosphoranylidene)-acetaldehyde(Triphenylphosphoranylidene)acetaldehyde(2-Oxoethylidene)triphenylphosphorane(甲酰基亚甲基)三苯基磷烷(Formylmethylene)triphenylphosphorane(Triphenylphosphoranylidene)acetaldehyde

IUPAC标准名

2-(triphenyl-$l^{5}-phosphanylidene)acetaldehyde 2-(triphenyl-λ⁵-phosphanylidene)acetaldehyde

名称和标识

数据登录号

CAS号

Beilstein号

EC号

MDL号

PubChem CID

PubChem SID

数据登录号

化合物性质

分子相关蛋白质

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分子图谱

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描述信息

Sigma Aldrich

280933

Application
用于将醛和酮转化为二碳同系化 α,β-不饱和羰基化合物的 Wittig 试剂。1,2
包装
5, 25 g in glass bottle

47720

Other Notes
用于立体选择性合成 Z-α,β-不饱和醛的 Wittig 试剂1

描述信息

参考文献

PubChem文献

数据源提供

• Stable ylide, which undergoes Wittig olefination with aldehydes, but not usually with ketones, to give enals: J. Chem. Soc., 1266 (1961); Angew. Chem. Int. Ed., 14, 486 (1975); Tetrahedron Lett., 3071 (1977). See Appendix 1. Reaction with aldehydes generally gives the thermodynamically more stable (E)-enal. Thus glyoxal gives trans,trans-muconic dialdehyde [(E),(E)-2,4-hexadienal]: Chem. Ber., 107, 710 (1974). The following sequence leads to (Z)-enals: Chem. Ber., 115, 161 (1982):