Reductive Radical Conjugate Addition of Alkyl Electrophiles Catalyzed by a Cobalt/Iridium Photoredox System
作者:Randolph A. Escobar、Jeffrey W. Johannes
DOI:10.1021/acs.orglett.1c02114
日期:2021.8.6
Alkyl and aryl halides have been studied extensively as radical precursors; however, mild and less toxic conditions for the activation of alkyl bromides toward alkylradicals are still desirable. Reported here is a reductive radical conjugate addition that allows for the formation of alkylradicals via activation of alkyl bromides through cobalt/iridium catalysis. The developed conditions are emphasized
[EN] ODORANT SECONDARY ALCOHOLS AND THEIR COMPOSITIONS<br/>[FR] ALCOOLS SECONDAIRES ODORANTS ET LEURS COMPOSITIONS
申请人:S H KELKAR & COMPANY LTD
公开号:WO2019228903A1
公开(公告)日:2019-12-05
The present invention relates to new classes of odorous alcohols (odorants) derived from 2,3- dimethylbutene which are useful as fragrance or flavor materials in particular in providing natural piney olfactory notes with a complex profile to perfume, aroma or deodorizing/masking compositions.
[EN] COMPOSITIONS COMPRISING ODORANTS<br/>[FR] COMPOSITIONS COMPRENANT UNE MATIÈRE ODORISANTE
申请人:S H KELKAR AND COMPANY LTD
公开号:WO2019030122A1
公开(公告)日:2019-02-14
The present invention relates to odorous 2- and/or 3-substituted 3-(allyloxy)propenes which are useful as fragrance or flavor ingredients in particular in providing green, fruity, pear and/or waxy olfactory notes. The present invention also relates to novel perfume, aroma or deodorizing/masking compositions comprising said odorants.
[EN] ODORANTS AND COMPOSITIONS COMPRISING ODORANTS<br/>[FR] ODORISANTS ET COMPOSITIONS COMPRENANT DES ODORISANTS
申请人:S H KELKAR AND COMPANY LTD
公开号:WO2021209944A1
公开(公告)日:2021-10-21
The present invention relates to new classes of odorous 3-(2- methylenealkoxy)alkanenitrile derivatives of formula (I) which are useful as fragrance or flavor materials in particular in providing dry, woody, dusty, earthy, and/or patchouli notes together with optional coriander, aldehydic, citrus, mandarin, pear, cinnamon, and/ or petal floral-like notes to perfume, aroma or deodorizing/masking compositions.
Iron-Catalyzed Photoredox Functionalization of Methane and Heavier Gaseous Alkanes: Scope, Kinetics, and Computational Studies
作者:Qingqing Zhang、Shuyang Liu、Jinglan Lei、Yongqiang Zhang、Changgong Meng、Chunying Duan、Yunhe Jin
DOI:10.1021/acs.orglett.2c00224
日期:2022.3.18
Herein, we report the development of the photocatalytic C–H functionalization of methane, ethane, and heavier gaseousalkanes with good yields and selectivity, broad scope (57 examples), mild conditions, and low cost. Kinetics and density functional theory calculations were investigated for the key photoinduced ligand-to-metal charge transfer and hydrogen atom transfer processes to reveal the detailed