SYNTHESIS OF ARYL CYCLOHEXANE CARBOXAMIDE DERIVATIVES USEFUL AS SENSATES IN CONSUMER PRODUCTS
申请人:The Procter & Gamble Company
公开号:US20170057911A1
公开(公告)日:2017-03-02
Synthesis methods to produce a series of carboxamides built off of an (S)-2-amino acid backbone or an (R)-2-amino acid backbone, depending upon the desired diastereomer of the end product.
A Divergent Strategy for Site‐Selective Radical Disulfuration of Carboxylic Acids with Trisulfide‐1,1‐Dioxides
作者:Zijun Wu、Derek A. Pratt
DOI:10.1002/anie.202104595
日期:2021.7.5
direct conversion of carboxylic acids into disulfides is described. The approach employs oxidative photocatalysis for base-promoted decarboxylation of the substrate, which yields an alkyl radical that reacts with a trisulfide dioxide through homolytic substitution. The trisulfide dioxides are easily prepared by a newly described approach. 1°, 2°, and 3° carboxylic acids with varied substitution are good
Catalytic Decarboxylation/Carboxylation Platform for Accessing Isotopically Labeled Carboxylic Acids
作者:Andreu Tortajada、Yaya Duan、Basudev Sahoo、Fei Cong、Georgios Toupalas、Antoine Sallustrau、Olivier Loreau、Davide Audisio、Ruben Martin
DOI:10.1021/acscatal.9b01921
日期:2019.7.5
integrated catalytic decarboxylation/carboxylation for accessing isotopicallylabeled carboxylic acids with 13CO2 or 14CO2 is described. The method shows a wide scope under mild conditions, even in the context of late-stage functionalization, and does not require stoichiometric organometallics, thus complementing existing carbon-labeling techniques en route to carboxylic acids.
描述了用于访问具有13 CO 2或14 CO 2的同位素标记的羧酸的集成催化脱羧/羧化反应。该方法在温和条件下显示了宽泛的范围,即使在后期功能化的情况下也是如此,并且不需要化学计量的有机金属,因此可以补充现有的碳标记技术(在羧酸生产过程中)。
PROCESS FOR MAKING NEO-ENRICHED p-MENTHANE COMPOUNDS
申请人:Erman Mark B.
公开号:US20120116113A1
公开(公告)日:2012-05-10
A process for making neo-enriched p-menthane intermediates is disclosed. Lewis acid-catalyzed rearrangement of an oxaspiro compound provides an aldehyde mixture comprising normal (II) and neo (III) p-menthane-3-aldehydes:
with the neo aldehyde (III) as the major product. The aldehyde mixture is readily oxidized to provide the corresponding carboxylic acids, and the acids are easily converted to a host of neo-enriched p-menthane esters or amides. The esters and amides are valuable as physiological coolants.
Process for making neo-enriched p-menthane compounds
申请人:Renessenz LLC
公开号:EP2450337A3
公开(公告)日:2014-06-18
A process for making neo-enriched p-menthane intermediates is disclosed. Lewis acid-catalyzed rearrangement of an oxaspiro compound provides an aldehyde mixture comprising normal (II) and neo (III) p-menthane-3-aldehydes:
with the neo aldehyde (III) as the major product. The aldehyde mixture is readily oxidized to provide the corresponding carboxylic acids, and the acids are easily converted to a host of neo-enriched p-menthane esters or amides. The esters and amides are valuable as physiological coolants.