Proton resonance spectra and substituent-induced chemical shifts of 3-halocamphors
作者:C. R. Kaiser、R. Rittner、E. A. Basso
DOI:10.1002/mrc.1260320902
日期:1994.9
assignment of the camphor parent molecule, are reported. The precise substituent‐induced chemical shifts (SCS) obtained for these difunctional systems are examined on the basis of well known transmission mechanisms aided by correlations with steric and electronic parameters, and taking into account SCS data from monohaloalkanes and the calculated molecular geometry data (using the AM1 method).
Efficient α-chlorination of carbonyl containing compounds under basic conditions using methyl chlorosulfate
作者:Saúl Silva、Christopher D. Maycock
DOI:10.1016/j.tetlet.2018.02.036
日期:2018.3
An efficient method for the α-chlorination of ketonesunder basic conditions is described using methyl chlorosulfate. Its applicability for the chlorination of other functional groups has also been studied and it is equally useful for the synthesis of α-chloroesters and amides. Methyl chlorosulfate is described for the first time as a positive chlorine source. Some aldol reactions which occur during