Transannular Diels-Alder reaction studies with an activated dienophile. An enantioselective synthesis of an A.B.C.[6.6.6] trans-syn-cis tricycle
摘要:
The synthesis and transannular Diels-Alder reaction of a chiral 14 membered trans-cis-cis (TCC) macrocyclic triene with an activated dienophile leading to an A.B.C.[6.6.6.] tricyclic compound are described. The outcome of the TADA reaction under thermal and catalyzed conditions is discussed. (C) 1997 Elsevier Science Ltd.
Transannular Diels-Alder reaction studies with an activated dienophile. An enantioselective synthesis of an A.B.C.[6.6.6] trans-syn-cis tricycle
摘要:
The synthesis and transannular Diels-Alder reaction of a chiral 14 membered trans-cis-cis (TCC) macrocyclic triene with an activated dienophile leading to an A.B.C.[6.6.6.] tricyclic compound are described. The outcome of the TADA reaction under thermal and catalyzed conditions is discussed. (C) 1997 Elsevier Science Ltd.
A new synthetic route to 1,5-dienes is described. Irradiation of a mixture of allyl bromides and allyl sulfides in the presence of hexamethylditin gives the cross-coupled products selectively.
Reactivity and Selectivity in the Intermolecular Alder–Ene Reactions of Arynes with Functionalized Alkenes
作者:Saswata Gupta、Peipei Xie、Yuanzhi Xia、Daesung Lee
DOI:10.1021/acs.orglett.7b02438
日期:2017.10.6
functionalized alkenes in intermolecular Alder–ene reactions with arynes is described. The arynes generated from bis-1,3-diynes react with various trisubstituted and 1,1-disubstituted alkenes containing hydroxyl, amino, halo, carboxyl, boronate, and 1,3-dienyl functionalities, providing product distributions with varying degrees of selectivity between Alder–ene and addition reactions. The geometry of