Unsaturated heterocyclic systems. XL. Evaluation of spiro[9,10-ethanoanthracene-11,2'-thietane] S,S-dioxides and 2.alpha.-dialkylaminoalkyl-3-dialkylaminothietane 1,1-dioxides as precursors of 2-methylenethiete 1,1-dioxide derivatives
Unsaturated heterocyclic systems. XL. Evaluation of spiro[9,10-ethanoanthracene-11,2'-thietane] S,S-dioxides and 2.alpha.-dialkylaminoalkyl-3-dialkylaminothietane 1,1-dioxides as precursors of 2-methylenethiete 1,1-dioxide derivatives