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Reaktionen von Dinatrium‐dicyandithioacetat und Natrium‐dicyanthioacetamiden mit γ‐Bromcrotonsäure‐Derivaten
Author(s) -
Wobig Dieter
Publication year - 1990
Publication title -
liebigs annalen der chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0170-2041
DOI - 10.1002/jlac.199019900120
Subject(s) - chemistry , reagent , alkylation , yield (engineering) , medicinal chemistry , sodium , sodium salt , organic chemistry , catalysis , materials science , metallurgy , inorganic chemistry
Reactions of Disodium Dicyanodithioacetate and Sodium Dicyanothioacetamides with Derivatives of γ‐Bromocrotonic Acid The dicyanodithioacetate 3 reacts with the derivatives of γ‐bromocrotonic acid 4a and 4b to give the thieno‐[2,3‐ b ]thiophenes 5a and 5b . 3 can also be alkylated successively with two different alkylating reagents. In this way the compounds 5c , 6a , and 6b are prepared. Reactions of the dicyanothioacetamides 8a and 8b with 4a and 4b yield the thiazolidines 9a – d .