Halodecarboxylation of α,β-acetylenic and α,β-ethylenic acids
作者:Fadi Homsi、Gérard Rousseau
DOI:10.1016/s0040-4039(99)00021-0
日期:1999.2
Reaction of bis(collidine)iodine(I) (or bromine (I)) hexafluorophosphate with acetylenic acids led to the corresponding iodo(or bromo)acetylenes in high yields. This halodecarboxylationreaction was also observed with acrylic acids substituted in position 3 by an aryl group or an heteroatom.
[EN] METHODS OF PRODUCING DICARBONYL COMPOUNDS<br/>[FR] PROCÉDÉS DE PRODUCTION DE COMPOSÉS DE DICARBONYLE
申请人:EMPIRE TECHNOLOGY DEV LLC
公开号:WO2015060862A1
公开(公告)日:2015-04-30
Dicarboxylic acids, such as adipic acid, and diesters, such as adipates, may be produced by hydrogenating alkynes that may be produced from raw materials salvaged from waste stream processes. The carbons of the dicarboxylic acids are provided by alkynes generated from biomass waste and carbon dioxide recovered from waste streams such as exhaust gases.
Dicarboxylic acids, such as adipic acid, and diesters, such as adipates, may be produced by hydrogenating alkynes that may be produced from raw materials salvaged from waste stream processes. The carbons of the dicarboxylic acids are provided by alkynes generated from biomass waste and carbon dioxide recovered from waste streams such as exhaust gases.
Dicarboxylic acids, such as adipic acid, and diesters, such as adipates, may be produced by hydrogenating alkynes that may be produced from raw materials salvaged from waste stream processes. The carbons of the dicarboxylic acids are provided by alkynes generated from biomass waste and carbon dioxide recovered from waste streams such as exhaust gases.
A method of imparting color to a plastic substrate comprising applying to the substrate, or incorporating within the substrate, a diacetylene compound of general formula (I) wherein n=1 to 20; R1=an optionally substituted C1-20 alkyl group which may contain heteroatoms; T=H, an optionally substituted C1-20 alkyl group which may contain heteroatoms or —(CH2)m—C(═O)-Q2R2; Q1=NH, CO, NHCONH, OCONH, COS, NHCSNH or NR3, wherein m, Q2 and R2 are independently selected from the same groups as n, Q1 and R1 respectively; R3 is an optionally substituted C1-20 alkyl group which may contain heteroatoms; and irradiating the substrate to impart color to the substrate is described.