Abstract
AbstractBy heating ethyl 2‐acylaminobenzoates, 2, with the dimer of p‐methoxy‐phenylthionophosphine sulfide, 1, at 80°C a mixture of ethyl 2‐thioacylamino‐benzoates,3, 2‐substituted 3, 1‐benzothiazin‐4‐ones, 4, and 2‐substituted 3, 1‐benzothiazine‐4‐thiones, 5, is obtained. By raising the reaction temperature to 140°C 5 is obtained as the only product. In all reactions between 2 and 1 three phosphorus‐containing compounds, 6‐8 are isolated. 2‐Substituted 3, 1 ‐benzoxazin‐4‐ones, 9, when reacted with 1 give mixtures of 4 and 5 due to a rearrangement reaction. Carbon‐13 NMR data are tabulated for the carbonyl‐, thiocarbonyl‐ and iminocarbons.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
