ORGANOPHOSPHORUS COMPOUNDS .48. 1-HALOGEN-1H-PHOSPHIRENES FROM PHOSPHAALKYNES AND CHLOROCARBENES

被引:30
作者
WAGNER, O [1 ]
EHLE, M [1 ]
BIRKEL, M [1 ]
HOFFMANN, J [1 ]
REGITZ, M [1 ]
机构
[1] UNIV KAISERSLAUTERN,FACHBEREICH CHEM,ERWIN SCHRODINGER STR,W-6750 KAISERSLAUTERN,GERMANY
关键词
DIAZIRINES; PHOSPHAALKYNES; CARBENES; PHOSPHORENES; 2+1] CYCLOADDITION;
D O I
10.1002/cber.19911240538
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Halogen-substituted carbenes (7a-i), generated by thermolysis of diazirines (11a-i), add onto phosphaalkynes (8a-c) to form the title compounds (10a-1). Initially formed 2H-phosphirenes (9) could not be detected as their subsequent conversion to the 1H-isomers 10 by a 1,3-halogen shift is very fast. Hydrolysis of 10c,e,g-i and k yields vinylphosphonous acids (17a-e). 1-Chloro-1H-phosphirenes are transformed by nucleophilic substitution into fluoro (10a,c,e --> 19a-c), bromo (10c,e --> 20a,b), and iodo analogs (10c,e --> 21a,b) with the help of silver tetrafluroborate, trimethylsilyl bromide, and trimethylsilyl iodide, respectively. A crystal structure analysis of 10 c is reported.
引用
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页码:1207 / 1213
页数:7
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