Tetrahedron letters

Palladium-catalyzed cyclization reactions of 3-propargylthio 1, 2, 4-triazin-5 (2h)-ones to thiazolo-1, 2, 4-triazinones

M Mizutani, Y Sanemitsu, Y Tamaru, Z Yoshida

文献索引：Mizutani, Masato; Sanemitsu, Yuzuru; Tamaru, Yoshinao; Yoshida, Zen-ichi Tetrahedron Letters, 1985 , vol. 26, # 9 p. 1237 - 1240

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被引用次数: 23

摘要

Abstract Selective transformation of 3-propargylthio-1, 2, 4-triazin-5 (2H)-ones (1) to 6- methylene-6, 7-dihydro-4H-thiazolo [2, 3-c][1, 2, 4]-triazin-4-ones (2) and 3-methylene-2, 3- dihydro-7H-thiazolo [3, 2-b]-[1, 2, 4] triazin-7-ones (3) is performed under the conditions of Pd (II) salt or sodium hydroxide catalysis, respectively.