Thiophilic “ene” adducts

Dioxopentane-3-thione reacts178 with allyltributylstannane, Scheme 14, to give the expected thiophilic ene adduct and a [2+2] cycloadduct. 

The presence of EWG on 2,4-dioxopentane-3-thione favours the formation of thiophilic adducts with different allyl substrates.178 In all cases the reaction affords single thiophilic ene adducts and formation of C=C occurs with high E stereoselectivity (Scheme 17). 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

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