The stereoselective synthesis of anti isomers of γ‐boryl‐substituted homoallylic alcohols is disclosed. (E)‐1,2‐Di(boryl)alk‐1‐enes undergo Ru‐catalyzed double‐bond transposition with control of the geometry. The in situ generated (E)‐1,2‐di(boryl)alk‐2‐enes add to aldehydes in a stereospecific manner. The alkenylboron group within the product is amenable to a variety of synthetic derivatizations.
Towards the Total Synthesis of Thuggacin A: Synthesis of the C13-C25 Fragment Bearing All-syn Stereocenters
作者:Gilles Niel、Griselda Zarate-Ruiz、Renata de Figueiredo、Jean-Marc Campagne
DOI:10.1055/s-0031-1290106
日期:2012.1
The diastereoselective synthesis of the key C13-C25 fragment of thuggacin A is described. Two Evans aldolization steps and a diastereoselective addition of an allenylstannane control the required all-syn configuration of the five contiguous stereocenters.
本文介绍了非对映选择性合成舒血宁 A 的关键 C13-C25 片段的方法。两个埃文斯醛化步骤和异戊烯基锡烷的非对映选择性加成控制了五个连续立体中心所需的全同步构型。
Total Synthesis of Thuggacin B
作者:Martin Bock、Richard Dehn、Andreas Kirschning
DOI:10.1002/anie.200803271
日期:2008.11.10
PHEROMONDISPENSER
申请人:BASF SE
公开号:EP2384111A1
公开(公告)日:2011-11-09
PHEROMONE DISPENSER
申请人:Harmsen Sven
公开号:US20110266361A1
公开(公告)日:2011-11-03
The present invention relates to a pheromone dispenser, filled with pheromone or a pheromone-comprising liquid and comprising (a) a deep-drawn plastic film made of a thermoplastic film material and featuring at least one dish-shaped zone for receiving a pheromone, and a planar plastic film made of a thermoplastic film material and which is connected with the deep-drawn plastic film, the planar plastic film together with the at least one dish-shaped zone of the deep-drawn plastic film forming a durably sealed chamber which comprises the pheromone or the pheromone-comprising liquid, and (c) a recess in the zone of the interconnected plastic films, the planar plastic film being permeable to the pheromone.
The invention also relates to a process for producing such a pheromone dispenser.