| Identification | Back Directory | [Name]
BIS(DIMETHYLVINYLENE) PYROPHOSPHATE | [CAS]
55894-94-5 | [Synonyms]
BIS(DIMETHYLVINYLENE) PYROPHOSPHATE
Bis(4,5-dimethyl-2-oxo-1,3,2-dioxaphospholenyl) Oxide
1,3,2-Dioxaphosphole, 2,2'-oxybis[4,5-dimethyl-, 2,2'-dioxide | [Molecular Formula]
C8H12O7P2 | [MOL File]
55894-94-5.mol | [Molecular Weight]
282.12 |
| Hazard Information | Back Directory | [Description]
BIS(DIMETHYLVINYLENE) PYROPHOSPHATE is a phosphorylating agent; selective for primary alcohols over secondary alcohols, especially in the presence of triethylamine; used for the preparation of various unsymmetrical phosphodiesters; precursor of the more reactive phosphorylating agents 4,5-dimethyl-2-chloro-2-oxo-1,3,2-dioxaphosphole and 4,5-dimethyl-2-(1′-imidazolyl)-2- oxo-1,3,2-dioxaphosphole. | [Preparation]
BIS(DIMETHYLVINYLENE) PYROPHOSPHATE can be prepared from 4,5-dimethyl-2-methoxy-2-oxo-1,3,2-dioxaphosphole (1) by treatment with pyridine in benzene to form the salt (2), followed by reaction with phosgene in benzene (eq 1). The solid (3) is recrystallized from CH2Cl2/hexanes.
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