PRODUCTION OF FATTY OLEFIN DERIVATIVES VIA OLEFIN METATHESIS
申请人:PROVIVI, INC.
公开号:US20170137365A1
公开(公告)日:2017-05-18
In one aspect, the invention provides a method for synthesizing a fatty olefin derivative. The method includes: a) contacting an olefin according to Formula I
with a metathesis reaction partner according to Formula IIb
in the presence of a metathesis catalyst under conditions sufficient to form a metathesis product according to Formula IIIb:
and
b) converting the metathesis product to the fatty olefin derivative. Each R
1
is independently selected from H, C
1-18
alkyl, and C
2-18
alkenyl; R
2b
is C
1-8
alkyl; subscript y is an integer ranging from 0 to 17; and subscript z is an integer ranging from 0 to 17. In certain embodiments, the metathesis catalyst is a tungsten catalyst or a molybdenum catalyst. In various embodiments, the fatty olefin derivative is a pheromone. Pheromone compositions and methods of using them are also described.
The present disclosure provides pheromone compositions. In some aspects, the compositions taught herein comprise a pheromone chemically corresponding to the pheromone naturally produced by a given insect, along with at least one positional isomer of said pheromone. In various aspects, pheromone compositions of the present disclosure are able to modulate the response of the insect based on the ratio of natural pheromone to its positional isomer.
The Wittig reaction: comments on the mechanism and application as a tool in the synthesis of conjugated dienes
作者:Rut Ideses、Arnon Shani
DOI:10.1016/s0040-4020(01)81031-0
日期:1989.1
Wittig reaction, of conjugated dienes with specific stereochemistry (either or ) at the newly formed double bond, without isomerization of the existing (“old”) double bond, it is better to react a reactive (nonstabilized) saturated ylide with an α, β-unsaturatedaldehyde. The opposite approach, namely, the reaction of a moderate (semi-stabilized) allylic ylide with a saturated aldehyde produces a mixture
NOVEL METHOD FOR PRODUCING (E,Z)-7,9-DODECADIENYL-1-ACETATE
申请人:MELCHIOR MATERIAL AND LIFE SCIENCE FRANCE
公开号:US20170137447A1
公开(公告)日:2017-05-18
The present invention concerns a method to access (E,Z)-7,9-dodecadienyl-1-acetate in two synthesis steps with excellent yields and selectivity greater than 70% by transformation of 2-hexenal into a novel intermediate, which is itself then transformed into (E,Z)-7,9-dodecandienyl-1-acetate.
Novel bisexual attractants, aggregants and arrestants for adults and larvae of codling moth and other species of lepidoptera
申请人:——
公开号:US20020061324A1
公开(公告)日:2002-05-23
Novel bisexual attractants for lepidopterous insect pests isolated from pears or apples. A method for monitoring and control of codling moth and other species of Lepidoptera comprising a lure and kill, mating disruption or mass trapping strategy. A method of using a formulation containing the bisexual attractants with or without an insecticide and/or pheromone for control of the insect pests.