NOVEL METHOD FOR PRODUCING 5, 5-DISUBSTITUTED-4, 5-DIHYDROISOXAZOLE
申请人:KUMIAI CHEMICAL INDUSTRY CO., LTD.
公开号:US20210047280A1
公开(公告)日:2021-02-18
The present invention addresses the problem of providing an industrially preferable, economical, and environmentally friendly method for producing the 4,5-dihydroisoxazole represented by a formula (3).
The present invention enables the compound of a formula (3) to be produced by reacting the compound of a formula (2) according to the reaction represented by a reaction formula in the presence of an acid catalyst.
Carbene-Catalyzed Enantioselective Sulfonylation of Enone Aryl Aldehydes: A New Mode of Breslow Intermediate Oxidation
作者:Rui Deng、Shuquan Wu、Chengli Mou、Jianjian Liu、Pengcheng Zheng、Xinglong Zhang、Yonggui Robin Chi
DOI:10.1021/jacs.1c13384
日期:2022.3.30
and stereoselectivity control on a very remote site of enone aryl aldehyde substrates. Water plays an important role in modulating catalyst deactivation and reactivation routes that involve reactions between NHC and sulfonyl chloride. Experimental studies and DFT calculations suggest that an unprecedented intermediate and a new oxidation mode of the NHC-derived Breslow intermediate are involved in the
Hydroformylation process for producing 1,6-hexanedials
申请人:UNION CARBIDE COATINGS
SERVICE TECHNOLOGY CORP.
公开号:EP0577042A1
公开(公告)日:1994-01-05
This invention relates to a hydroformylation process for producing a 1,6- hexanedial which comprises reacting a butadiene with hydrogen and carbon monoxide in the presence of a catalytic amount of rhodium complexed with certain poly-phosphite ligands to achieve high conversions of the butadiene to the 1,6-hexanedial.
A method for producing cyclopentadienes which comprises the step of cyclodehydration of an unsaturated carbonyl compound having a specific chemical structures in a vapor phase in the presence of a specific solid acid catalyst. The cyclopentadienes of the invention can be produced in a high yield from inexpensive starting materials through a simplified reaction process and are useful as intermediate compounds for organic synthesis.
COMPOSITION FOR REMOVING SULFUR-CONTAINING COMPOUND
申请人:Kuraray Co., Ltd.
公开号:EP3476478A1
公开(公告)日:2019-05-01
Provided is a composition for removing a sulfur-containing compound present in liquid or vapor, the sulfur-containing compound being hydrogen sulfide, an -SH group-containing compound or a mixture thereof, the composition containing an α,β-unsaturated aldehyde represented by the following general formula (1) as an active ingredient:
wherein R1 and R2 each independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an aryl group having 6 to 12 carbon atoms, or are connected to each other to represent an alkylene group having 2 to 6 carbon atoms; and R3 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or is connected to R1 to represent an alkylene group having 2 to 6 carbon atoms.