The Highly Efficient Suzuki-Miyaura Cross-Coupling of (Hetero)aryl Chlorides and (Hetero)arylboronic Acids Catalyzed by “Bulky-yet-Flexible” Palladium-PEPPSI Complexes in Air
作者:Jia-Sheng Ouyang、Yan-Fang Li、Fei-Dong Huang、Dong-Dong Lu、Feng-Shou Liu
DOI:10.1002/cctc.201701076
日期:2018.1.23
Pd–PEPPSI complexes were designed and synthesized. The relationship between catalyst structure and properties was systematically investigated. It was revealed that “bulky‐yet‐flexible” C3 bearing ancenaphthyl backbone was a highlyefficient precatalyst and could be successfully employed in Suzuki–Miyaura reactions of (hetero)arylchlorides with (hetero)arylboronic acids at a low palladium loading in the presence
Tobacco with an increased level of natural tar diluents
申请人:Lipowicz Peter John
公开号:US10271573B2
公开(公告)日:2019-04-30
Disclosed are methods and compositions for preparing tobacco such that components of tobacco tar are reduced, while maintaining the total tar delivery of a composition or device containing tobacco treated with one or more natural tar diluents. Artificial tar diluents can also be used in combination with one more natural tar diluents. The tobacco compositions have decreased levels of tobacco specific nitrosamines and/or other components found in tar when the composition is smoked, while maintaining the total tar delivery of the smoking article, such as a cigarette, when using a tar diluent at a level sufficient to achieve desired taste qualities.
Pyrrole compound, method of making same, and aroma composition, food, drink and cosmetics containing same
申请人:T. HASEGAWA CO., LTD.
公开号:US11332694B2
公开(公告)日:2022-05-17
A compound represented by the following formula (1):
wherein, R1 is a linear or branched alkyl group having 1 to 3 carbon atoms or a hydroxyl group; and R2 is a 1-pyrrolyl group, a 2-pyrrolyl group, or a 3-pyrrolyl group. The present invention can provide a means highly effective in contributing to savory roasting flavor and capable of imparting fragrance with natural feeling.
Brotaroma, seine Herstellung und seine Verwendung zur Aromatisierung von Nahrungs- und Genussmitteln
申请人:FÜRSTLICHE BRAUEREI
THURN UND TAXIS REGENSBURG GMBH
公开号:EP0413368B1
公开(公告)日:1994-08-17
PROCESS FOR PRODUCING A LIQUID EXTRACT, PROCESS FOR PRODUCING COFFEE WITH REDUCED BITTERNESS, PROCESS FOR PRODUCING TEA, AND PROCESS FOR PRODUCING A LIQUID EXTRACT WHICH INCLUDE PYRAZINES