Carbocation Catalysis: Oxa-Diels-Alder Reactions of Unactivated Aldehydes and Simple Dienes
作者:Mahmoud Abd El Aleem Ali Ali El Remaily、Veluru Ramesh Naidu、Shengjun Ni、Johan Franzén
DOI:10.1002/ejoc.201501112
日期:2015.10
organocatalyst is demonstrated in the oxa-Diels-Alder reaction of various unactivated aromatic and aliphatic aldehydes and simple unactivated dienes, such as isoprene and 2,3-dimethylbutadiene. The transformation proceeds smoothly to give 3,6-dihydropyrane adducts in high to moderate yields with catalyst loadings down to 1.0 mol-% under mild reaction conditions. In contrast to most previously reported
The present invention refers to dihydropyran derivatives, and to a process of making the same. The invention further refers to perfume compositions and fragranced articles comprising them.
The present invention refers to dihydropyran derivatives, and to a process of making the same. The invention further refers to perfume compositions and fragranced articles comprising them.