230-04-6Relevant articles and documents
Reactions with 6H-dibenzo[b,d]thiopyran and 6H-dibenzo[b,d]thiopyran-S,S-dioxide
Unterhalt,Bruening
, p. 1 - 10 (2007/10/03)
6H-Dibenzo[b,d]thiopyran (1) is oxidized to its sulfone 2, and both compounds are reacted to the dialkylaminoalkyl derivatives 3 and 4. Chlorinating and cyanation of 1 give the nitrile 6, which is hydrolized to 7 and esterified to 8. Dialkylaminoalkylation of 8 leads to 9, ethylsulfonation of 4 to 5.