431988-17-9

Basic information

• Product Name: (triphenylphosphonio)methanide-3,5-dimethylborabenzene
• CAS NO: 431988-17-9
• Molecular Weight: 380.277
• Mol File: 431988-17-9.mol

Chemical Properties

• CAS DataBase Reference: (triphenylphosphonio)methanide-3,5-dimethylborabenzene(CAS DataBase Reference)
• NIST Chemistry Reference: (triphenylphosphonio)methanide-3,5-dimethylborabenzene(431988-17-9)
• EPA Substance Registry System: (triphenylphosphonio)methanide-3,5-dimethylborabenzene(431988-17-9)

Safety Data

• Hazardous Substances Data: 431988-17-9(Hazardous Substances Data)

Upstream product

• 300362-35-0 1-chloro-3,5-dimethyl-2-(trimethylsilyl)-1,2-dihydroborinine 
• 19493-09-5 Methylenetriphenylphosphorane 

Relevant articles and documents

Borabenzene adducts of ylidic lewis bases. Syntheses and structures of 3,5-Me2C5H3BCH2PPh3, 3,5-Me2C5H3BCH(SiMe3)PPh3 , and C5H5BN(Ph)PPh3

The methylenephosphorane Ph3PCH2 reacts with 1-chloro-3,5-dimethyl-2-(trimethylsilyl)1,2-dihydroborinine (2c) (in a 2/1 ratio) at ambient temperature to produce (triphenylphosphonio)methanide-3,5-dimethylborabenzene, 3,5-Me2C5H3BCH2PPh3 (3), with 1 equiv of (Ph3PCH2SiMe3)Cl (4), and (trimethylsilyl)(triphenylphosphonio)methanide-3,5-dimethylborabenzene, 3,5-Me2C5H3BCH(SiMe3)PPh3 (5), with 1 equiv of (PMePh3)Cl (6). Both adducts 3 and 5 are yellow crystalline compounds. Treatment of the iminophosphorane Ph3PNPh with an isomer mixture of 1-chloro(trimethylsilyl)dihydroborinines (8) produces Af-(triphenylphosphonio)anilide-borabenzene C5H5BN(Ph)PPh3 (9) as brown-yellow crystals. The reaction of PMe3 with 2c affords the colorless trimethylphosphine adduct 3,5-Me2C5H3BPMe3 (10). The structures of the new adducts 3, 5, and 9 are reported. They do not show conjugation between the two remote charge centers, even in the case of the iminophosphorane adduct 9.