5732-02-5Relevant articles and documents
A Silyl Substituent Can Dictate a Concerted Electrocyclic Pathway: Inward Torquoselectivity in the Ring Opening of 3-Silyl-1-cyclobutene
Murakami, Masahiro,Miyamoto, Yasufumi,Ito, Yoshihiko
, p. 189 - 190 (2001)
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Method for preparing neophytadiene compounds from fatty acid
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, (2017/08/29)
The invention relates to a method for preparing neophytadiene compounds from fatty acid. The method comprises the following steps: firstly preparing lipid-containing ketene from fatty acid in two ways, namely a way a comprising the steps of dehydrogenizing the fatty acid by a deprotonation reagent and then reacting with a vinyl Grignard reagent or vinyl lithium to generate ketene compounds, and a way b comprising steps of activating the fatty acid by carbodiimide reagents, then reacting with dialkyl hydroxylamine or hydrochloride thereof to generate N-alkoxy amide compounds (Weinreb amides) and then reacting with the vinyl Grignard reagent or vinyl lithium to generate the ketene compounds; and finally carrying out reaction on the ketene compounds and an olefination reaction reagent to generate the neophytadiene compounds.
Efficient preparation of terminal conjugated dienes by coupling of dienol phosphates with grignard reagents under iron catalysis
Cahiez, Gerard,Habiak, Vanessa,Gager, Olivier
supporting information; experimental part, p. 2389 - 2392 (2009/05/27)
(Chemical Equation Presented) An efficient new route to prepare stereoselectively terminal conjugated dienes by coupling Grignard reagents and dienol phosphates in the presence of Fe(acac)3 is described. The synthetic utility of this new iron-catalyzed procedure is illustrated by the synthesis of the pheromone of Diparopsis castanea according to a very expeditious strategy.