Unprecedented Chemistry of an Aryloxychlorodiazirine: Generation of a Dihalodiazirine and Diazirinone
摘要:
The reaction of p-nitrophenoxychlorodiazirine with tetrabutylammonium fluoride follows three channels: (1) approximately 17% of p-nitrophenoxide/fluoride exchange to chlorofluorodiazirine and p-nitrophenol, (2) approximately 28% of Cl/F exchange to p-nitrophenoxyfluorodiazirine, and (3) approximately 55% of ipso fluoride attack, affording p-nitrofluorobenzene and the previously unknown diazirinone (diazacyclopropenone).
Unprecedented Chemistry of an Aryloxychlorodiazirine: Generation of a Dihalodiazirine and Diazirinone
摘要:
The reaction of p-nitrophenoxychlorodiazirine with tetrabutylammonium fluoride follows three channels: (1) approximately 17% of p-nitrophenoxide/fluoride exchange to chlorofluorodiazirine and p-nitrophenol, (2) approximately 28% of Cl/F exchange to p-nitrophenoxyfluorodiazirine, and (3) approximately 55% of ipso fluoride attack, affording p-nitrofluorobenzene and the previously unknown diazirinone (diazacyclopropenone).
Chlorofluorocarbene: First UV Observation of a Dihalocarbene in Solution
作者:Robert A. Moss、Jingzhi Tian、Ronald R. Sauers、Christopher Skalit、Karsten Krogh-Jespersen
DOI:10.1021/ol701804m
日期:2007.9.1
Chlorofluorocarbene (ClCF), generated by laser flash photolysis of chlorofluorodiazirine, absorbs at 368 nm in pentane. Absolute rate constants are reported for ClCF additions to several alkenes and pyridine. ClCF is less reactive toward alkenes than CCl(2), and it does not react rapidly with oxygen. Pertinent computational studies are included.