A V Sunthankar
Articles written in Proceedings – Section A
Volume 32 Issue 6 December 1950 pp 396-401
5-Methyl-(II) and 6-methyl-thionaphthenes (IV) and the hitherto unknown 7-methyl-(VI), 5-chloro-(IX), 6-chloro-(XI) and 7-chloro-thionaphthenes (XIII) were prepared by the new synthesis. 7-Methylthionaphthene-1-dioxide (VII) was also prepared.
Volume 33 Issue 1 January 1951 pp 35-41
5-Methoxythionaphthene (II) and the hitherto unknown 6-methoxy-(IV), 7-methoxy- (VI) and 5-ethoxy-thionaphthenes (VIII) have been prepared by the new synthesis. 6-Methoxy-5-methylthionaphthene (X) was also prepared similarly and gave 6-methoxy-5-methylthionaphthene-1-dioxide (XI) on oxidation. Demethylation of (VI) and (X) gave 7-hydroxythionaphthene (XIII) and 6-hydroxy-5-methylthionaphthene (XIV).
Volume 36 Issue 5 November 1952 pp 405-410
5-Bromothionaphthene and 7-bromothionaphthene were prepared by the cyclization of
The new synthesis of thionaphthene may also be extended to negatively substituted thionaphthenes as shown by the synthesis of 5-nitrothionaphthene (VI) by the ring-closure of
Volume 38 Issue 1 July 1953 pp 23-30
In view of the activity of