De Lucas Nanci Camara, Andraos John, Netto-Ferreira J. C., Scaiano J. C., Tetrahedron Lett., 36 (1995) N 5, S 677-680
作者:De Lucas Nanci Camara, Andraos John, Netto-Ferreira J. C., Scaiano J. C.
DOI:——
日期:——
Nucleophilicity toward Ketenes: Rate Constants for Addition of Amines to Aryl Ketenes in Acetonitrile Solution
作者:N. C. de Lucas、J. C. Netto-Ferreira、J. Andraos、J. C. Scaiano
DOI:10.1021/jo005752q
日期:2001.7.1
to ketenes 4-6 in acetonitrile solution by the laser flash photolysis technique. These ketenes are formed from a photochemical Wolff rearrangement of diazoketones 1-3, respectively. For all diazoketones studied, the presence of amines as nucleophiles in the reaction medium results in the formation of an intermediate that later converts to the amide. The rate of formation of these intermediates is linearly
Laser flash photolysis study of the reactivity of α-ketenylbenzocyclobutenone with water and alcohols
作者:Nanci Camara de Lucas、John Andraos、J.C. Netto-Ferreira、J.C. Scaiano
DOI:10.1016/0040-4039(94)02350-k
日期:1995.1
Photolysis of 2-diazo-1,3-indandione leads to ketene formation via the Wolff rearrangement. Ketene 2 hydrates to produce enol 3a that rearranges to 4a. Homophthalic acid 5a is formed by photodecomposition of 4a upon prolonged irradiation.