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).
The Synthesis of Dichlorodiazirine and the Generation of Dichlorocarbene: Spectroscopy and Structure of Dichlorocarbene Ylides
作者:Robert A. Moss、Jingzhi Tian、Ronald R. Sauers、Daniel H. Ess、Kendall N. Houk、Karsten Krogh-Jespersen
DOI:10.1021/ja068727w
日期:2007.4.1
Reaction of 2,4-dinitrophenoxychlorodiazirine (13) with chloride ions affords dichlorodiazirine (4). Photolysis of 4 generates dichlorocarbene. In laser flashphotolysis (LFP) experiments, CCl2 forms chromophoric ylides or oxides with pyridine, 2-picoline, thioanisole, and oxygen. Spectroscopic and computational studies of the ylides are reported. The UV spectrum of CCl2 in solution, however, is not
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.
1-chloro-1-phosphirenes - a new synthesis from phosphaalkenes and carbenes
作者:Werner Schnurr、Manfred Regitz
DOI:10.1016/s0040-4039(00)99292-x
日期:1989.1
The chlorocarbenes 2, generated thermally from the diazirines 8, take part in [2 + 1]-cycloaddition reactions with the phosphaalkenes 5 to furnish the dichlorophosphiranes 9. At 130 °C, the latter products 9 undergo elimination of chlorotrimethylsilane to form the 1-chloro-1-phosphirenes 4.