Add time:09/25/2019         Source:sciencedirect.com

3,1-Benzoxathian-4-ones, 2, when heated with 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2, 4-disulfide, 1, or with P4S10 give one or more of the following products 3,1-benzoxathian-4-thione, 3, 1,3-benzodithian-4-one, 4, 1,3-benzodithian-4-thione, 5, and 3H-1,2-benzodithiole-3-thione, 6. Compounds 2, when heated with primary and secondary amines and with hydrazines, give 2-mercaptobenzamides, 7, and 2-mercaptobenzohydrazides, 8, or their corresponding disulfides, 7' and 8'. 3H-1, 2-Benzodithiol-3-immes, which are in equilibrium with 1,2-benzisothiazole-3(2H)-thiones, (9A ⇄ 9B), are prepared by two new routes (a) by allowing 3 or 5 to react with primary amines or hydrazines, (b) by allowing 7, 8, 7' or 8' to react with 1.

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