174782-01-5

Basic information

• Product Name: anti-(9-phenyl-9-phosphabicyclo[6.1.0]nona-3-ene)pentacarbonyltungsten
• CAS NO: 174782-01-5
• Molecular Weight: 540.165
• Mol File: 174782-01-5.mol

Chemical Properties

• CAS DataBase Reference: anti-(9-phenyl-9-phosphabicyclo[6.1.0]nona-3-ene)pentacarbonyltungsten(CAS DataBase Reference)
• NIST Chemistry Reference: anti-(9-phenyl-9-phosphabicyclo[6.1.0]nona-3-ene)pentacarbonyltungsten(174782-01-5)
• EPA Substance Registry System: anti-(9-phenyl-9-phosphabicyclo[6.1.0]nona-3-ene)pentacarbonyltungsten(174782-01-5)

Safety Data

• Hazardous Substances Data: 174782-01-5(Hazardous Substances Data)

Upstream product

• 82265-64-3 syn-[5,6-dimethyl-2,3-bis(methoxycarbonyl)-7-phenyl-7-phosphanorbornadiene]pentacarbonyltungsten 
• 3806-59-5 1,3-cyclooctadiene 

Relevant articles and documents

Epimerization of cyclic vinylphosphirane complexes: The intermediacy of biradicals

The phosphinidene complex Ph-P-W(CO)5 reacts with cyclopentadiene, 1,3-cyclohexadiene, 1,3-cycloheptadiene, and 1,3-cyclooctadiene to give in each case isomeric mixtures of syn- and anti-vinylphosphiranes. With longer reaction times and/or higher reaction temperatures, the anti adducts isomerize to the syn adducts. These epimerizations are likely to proceed via biradical intermediates. Only the syn-vinylphosphirane of 1,3-cyclohexadiene undergoes a [1,3]-sigmatropic shift to yield a syn-phopholene. The dichotomy of biradical and concerted mechanisms is discussed in relationship with the analogous mechanism for the vinylcyclopropane → cyclopentene rearrangement.