74437-39-1Relevant articles and documents
Synthetic Equivalents to Substituted Acetylenes in Cycloaddition Reactions. Dienophilic Reactivity of 2-Methyl-, 2-Phenyl- and 2,3-Trimethylene-1,4-Benzodithiins-1,4-Tetroxides
Giacometti, Andrea,Lucchi, Ottorino De,Dilillo, Francisco,Cossu, Sergio,Peters, Karl,et al.
, p. 7913 - 7922 (2007/10/02)
Dienophiles 2-methyl-1,4-benzodithiin-1,4-tetroxide (3a), 2-phenyl-1,4-benzodithiin-1,4-tetroxide (3b) and 2,3-trimethylene-1,4-benzodithiin-1,4-tetroxide (3c) have been prepared with different methods starting from benzene-1,2-dithiol (1).Their reactivit
BIS(TERT-BUTYLSULFONYL)ACETYLENE AS A GENERAL SYNTHETIC EQUIVALENT OF ALKYNES IN DIELS-ALDER CHEMISTRY. II: REDUCTIVE AND ALKYLATIVE DESULFONYLATIONS OF BICYCLIC 1-ALKYL-2-(TERT-BUTYLSULFONYL)ETHENES
Virgili, Marina,Belloch, Jordi,Moyano, Albert,Pericas, Miquel A.,Riera, Antoni
, p. 4583 - 4586 (2007/10/02)
Both reductive and alkylative desulfonylations of bicyclic vinyl sulfones derived from Diels-Alder cycloadducts of bis(tert-butylsulfonyl)acetylene (1) are described.These transformations establish the synthetic equivalence of 1 with acetylene, 1-alkynes
1,2-BIS(PHENYLSULFONYL)ALKENES AS VERSATILE GROUPS IN ORGANIC SYNTHESIS: THE PREPARATION OF ALKYL- AND ARYL-SUBSTITUTED NORBORNADIENES VIA THE DIELS-ALDER CYCLOADDITION - GRIGNARD REACTION - DESULFONYLATION SEQUENCE
Azzena, Ugo,Cossu, Sergio,De Lucchi, Ottorino,Melloni, Giovanni
, p. 1845 - 1848 (2007/10/02)
A synthetic methodology for the preparation of the formal Diels-Alder cycloadducts of alkyl- and aryl-substituted acetylenes which exemplifies the utility of bis(phenylsulfonyl)alkenes 1 in organic synthesis is presented.The procedure entails -cycloaddition of (e)-1,2-bis(phenylsulfonyl)-1-chloroethylene (4), grignard reaction and desulfonylation; each step occurs in high yield.