182687-94-1Relevant articles and documents
Condensation of cyclopentadienides with disulfides and sulfenyl chlorides to give cyclopenta[b]thiochromanones
Hartke,Ashry
, p. 407 - 420 (2007/10/03)
Alkali cyclopentadienides 7 react with 2,2'-dithiobis(methyl benzoate) (6) to form the cyclopenta[b]thiochroman-9(1H)-ones 10'. With thallium cyclopentadienide (12) and the sulfenyl chlorides 11 and 18 the cyclopentadiene derivatives 13'/13'' and 19'/19'' are obtained. These condense with acetone/pyrrolidin to give the pentafulvenes 21 and the dihydropentalene 22.