Efficient three-component reactions of α-thiocyanato ketones stereoselectively forming E-3-aroylidene-2-oxindole derivatives
摘要:
A new three-component reaction of cc-thiocyanato ketones under microwave irradiation for the stereo-selective synthesis of 25 examples of E-3-aroylidene-2-oxindole derivatives has been described. The domino reaction simultaneously installs C-S and C-C bonds through continuous [3+2] cycloaddition/ring opening of in situ generated 1,3-oxathiolanes/S(N)2-type reaction sequence. (C) 2013 Elsevier Ltd. All rights reserved.