| 摘要 |
1439512 Phosphonium salts PFIZER Inc 29 May 1973 [7 June 1972] 42096/75 Divided out of 1439511 Headings C2P and C2C Novel phosphonium salts of the formula wherein R is C 2-8 alkanoyl, C 3-8 cycloalkanoyl, aroyl optionally substituted by methyl, methoxy or halogen, C 1-7 alkylsulphonyl, heteroarylsulphonyl, or arylsulphonyl optionally substituted by methyl, methoxy or halogen, are prepared by reacting triphenylphosphine with compounds of the formula which are prepared by acylating 5-bromovaleramide or by reacting compounds of the formula with 5-bromovaleric acid chloride. |
