744 HENRY L. WHEELER AND GEORGE S. JAMIESON conversion into isothiocyanate, by acting on potassium thiocyanate in benzene or alcoholic solutions, are those in which the halogen is in direct combination with a negative group, as in the case of the acyl halides1 This rule, until recently, was supposed to be general for all except the allyl halides. The formation of isothiocyanates by the latter had already been ascribed to the negative ...
![1-[(4-methylphenyl)-phenylmethyl]-3-phenylthiourea Structure](https://image.chemsrc.com/caspic/361/61353-90-0.png)
