Silver Tetrafluoroborate-Catalyzed Oxa-Diels-Alder Reaction Between Electrically Neutral Dienes and Aldehydes
作者:Xiaodong Zou、Lizheng Yang、Xiangli Liu、Hao Sun、Hongjian Lu
DOI:10.1002/adsc.201500487
日期:2015.10.12
Chemoselective oxa-Diels–Alder reactionsbetween electrically neutral 1,3-dienes and various aldehydes were achieved using the commercially available silver tetrafluoroborate (AgBF4) as catalyst. This catalytic process has high functional group tolerance. Heteroatoms at the β-position of the aryl aldehydes can greatly promote the reactivity of the substrates even with heterocyclic aldehydes that were
Green-light-driven FeIII(btz)3photocatalysis for the radical cationic [4+2] cycloaddition of terminal styrenes and nucleophilic dienes has been investigated. The Fe-MIC (mesoionic carbene) complex forms a ligand-to-metal charge-transfer transition state with relatively high excited-state reduction potentials that can selectively oxidize terminal styrene derivatives. Unique multisubstituted cyclohexenes
已经研究了用于末端苯乙烯和亲核二烯的自由基阳离子[4+2]环加成的绿光驱动的Fe III (btz) 3光催化。Fe-MIC(介离子卡宾)配合物形成配体-金属电荷转移过渡态,具有相对较高的激发态还原电位,可以选择性地氧化末端苯乙烯衍生物。构建了独特的多取代环己烯和结构复杂的生物相关环己烯,突出了这种温和实用的第一排过渡金属络合物体系的实用性。
Brønsted Acid-Catalyzed Regioselective Hydrothiolation of Dienes: Solvent-Controlled Divergent Synthesis of Sulfides