A novel [3 + 2] cycloaddition reaction of azaoxyallyl cations and aromatic ethylenes has been developed to afford multi-substituted pyrrolidinones in moderate to good yields. This method not only further expands the synthetic utility of α-halo hydroxamates, but also provides an alternative method for the synthesis of bioactive molecules containing pyrrolidinones.
The reaction of dimethylketen with some acid halides
作者:William T. Brady、Larry Smith
DOI:10.1039/j39700002522
日期:——
The addition of several acidhalides to dimethylketen to produce β-keto-acid halides is described. A correlation exists between the reactivity of the acidhalide and the pKa of the acid from which the acid from which the acidhalide is derived. Dimethylketen is more reactive than diphenyl- and phenylethyl-keten. This is not a general reaction of keten and acidhalides.
描述了向二甲基酮中添加几种酰卤以产生β-酮酰卤。酰卤的反应性与衍生出酰卤的酸的酸的p K a之间存在相关性。二甲基酮比二苯基酮和苯乙基酮更具反应性。这不是酮基和酰基卤的一般反应。
Preparation of Carboxylic Acid Bromides using Thionyl Bromide as Brominating Agent
作者:S. D. SARAF、Mustafa ZAKI
DOI:10.1055/s-1973-22269
日期:——
Polaczkowa; Bankowska, Roczniki Chemii, 1956, vol. 30, p. 119,123
作者:Polaczkowa、Bankowska
DOI:——
日期:——
Mutreja, H. C.; Reinhoudt, D. N., Recueil des Travaux Chimiques des Pays-Bas, 1980, vol. 99, # 7-8, p. 241 - 246