Thiolbenzoic acid in refluxing benzene reacts with As2O3 or As2S3 to give arsenic (III) thiobenzoate. Under similar conditions dithiolterephthalic acid gives a product which appears to be As (SOCC6H4COSH)3; thiolacetic acid gives acetyl sulfide; and phthaloyl sulfde is unreactive.
Proceedings of the Iowa Academy of Science
©1966 Iowa Academy of Science, Inc.
Caswell, Lyman R.
"Reactions of Thiolacids with As20s and As2S3,"
Proceedings of the Iowa Academy of Science, 73(1), 96-101.
Available at: https://scholarworks.uni.edu/pias/vol73/iss1/16