cyanoarylmethylation of aryl acetonitrile to isatins is developed, giving products in high yields and up to excellent diastereoselectivities. A remarkable enhancement of reaction rates and diastereoselectivities by water was observed under mild conditions. Moreover, this approach provides a highly efficient and environmentally benign access to thermodynamic 3-hydroxy-3-cyanomethyl oxindoles.
Pietra; Tacconi, Gazzetta Chimica Italiana, 1959, vol. 89, p. 2304,2309
作者:Pietra、Tacconi
DOI:——
日期:——
DBU-Mediated Diastereoselective Aldol-Type Cyanomethylation of Isatins
作者:V. U. Bhaskara Rao、Krishna Kumar、Tamal Das、Kumar Vanka、Ravi P. Singh
DOI:10.1021/acs.joc.7b00512
日期:2017.4.21
diastereoselectivity. Further transformation of the cyanide group allowed the synthesis of an advance intermediate of corresponding (±) CPC analogue. The mechanistic insight toward the aldol-type cyanomethylation of N-tritylisatin with benzyl cyanide was obtained by DFT calculations.