Efficient Method for the Preparation of Carboxylic Acid Alkyl Esters or Alkyl Phenyl Ethers by a New-Type of Oxidation–Reduction Condensation Using 2,6-Dimethyl-1,4-benzoquinone and Alkoxydiphenylphosphines
A new-type of oxidation–reduction condensation proceeded smoothly to afford carboxylic acid alkyl esters or alkyl phenyl ethers in good to high yields by combined use of alkoxydiphenylphosphines (1...
一种新型氧化还原缩合反应顺利进行,通过结合使用烷氧基二苯基膦(1...
Preparation of Esters of Carboxylic and Phosphoric Acid<i>via</i>Quaternary Phosphonium Salts
作者:Oyo Mitsunobu、Masaaki Yamada
DOI:10.1246/bcsj.40.2380
日期:1967.10
When n-valeric acid was treated with allyl diethyl phosphite and diethylazodicarboxylate, allyl valeriate and diethyl N-(diethyl)phosphoryl hydrazodicarboxylate were obtained in good yields. Similarly ethyl benzoate was obtained in a nearly quantitative yield by the reaction of benzoic acid with triethyl phosphite and diethylazodicarboxylate. The reaction of carboxylic acid with triphenyl phosphine
PERFUMING INGREDIENTS OF THE FLORAL AND/OR ANIS TYPE
申请人:Moretti Robert
公开号:US20110200546A1
公开(公告)日:2011-08-18
The present invention concerns a compound of formula wherein R represents a hydrogen atom or a C
1-2
alkyl or alkoxyl group; each R
1
, R
2
or R
3
represents a hydrogen atom or a methyl or ethyl group; and X represents a CHO, COOR
4
or CN group, R
4
being a methyl or ethyl group; and at least one of said R, R
1
or R
2
represents a group containing at least one carbon atom; and it use as perfuming ingredient, for instance to impart odor notes of the floral and/or anis type.
Manganese-Mediated C–C Bond Formation: Alkoxycarbonylation of Organoboranes
作者:Robbert van Putten、Georgy A. Filonenko、Annika M. Krieger、Martin Lutz、Evgeny A. Pidko
DOI:10.1021/acs.organomet.0c00781
日期:2021.3.22
important and versatile reactions that result in the formation of a new C–Cbond. Herein, we report on a new and halide-free alkoxycarbonylation reaction that does not require the application of an external carbon monoxide atmosphere. Instead, manganese carbonyl complexes and organo(alkoxy)borate salts react to form an ester product containing the target C–Cbond. The required organo(alkoxy)borate salts are
Highly efficient transformation of γ-valerolactone to valerate esters over structure-controlled copper/zirconia catalysts prepared via a reduction-oxidation route
作者:Shanshan Liu、Guoli Fan、Lan Yang、Feng Li
DOI:10.1016/j.apcata.2017.06.032
日期:2017.8
synthesis of highly dispersed Cu/ZrO2 catalyst. Characterization results revealed that homogeneous dispersion of CuO, high surface area of ZrO2 support with controlled porous structure, and strong interaction between CuO and ZrO2 in CuO/ZrO2 precursor could lead to the enhanced Cu dispersion and the formation of Cu+ activecenters. The synthesized Cu/ZrO2 catalysts exhibited excellent catalytic performance