Synthesis and carbene decomposition of functionally substituted diazoacetic acid esters. 8. Cyanomethyl diazoacetate
摘要:
Diazoacetic acid cyanomethyl ester (1) was synthesized, and its chemical conversions were investigated. Catalytic denitration of compound 1 with Rh2-(OAc)4 in CH2Cl2 at 25-degrees-C in the presence of alkenes, dienes-1,3, and alkynes-1 afforded the corresponding cyclopropane- and cyclopropenecarboxylic-3 acid esters in yields of 80-85% and was almost independent of the type of unsaturated acceptor. Competitive interaction methods showed that compound 1 has a high reactivity toward terminal alkenes and alkynes, which is comparable to that of methyl and propargyl diazoacetates.
Synthesis and carbene decomposition of functionally substituted diazoacetic acid esters. 8. Cyanomethyl diazoacetate
摘要:
Diazoacetic acid cyanomethyl ester (1) was synthesized, and its chemical conversions were investigated. Catalytic denitration of compound 1 with Rh2-(OAc)4 in CH2Cl2 at 25-degrees-C in the presence of alkenes, dienes-1,3, and alkynes-1 afforded the corresponding cyclopropane- and cyclopropenecarboxylic-3 acid esters in yields of 80-85% and was almost independent of the type of unsaturated acceptor. Competitive interaction methods showed that compound 1 has a high reactivity toward terminal alkenes and alkynes, which is comparable to that of methyl and propargyl diazoacetates.