53312-88-2Relevant academic research and scientific papers
Efficient Electrocatalysis for the Preparation of (Hetero)aryl Chlorides and Vinyl Chloride with 1,2-Dichloroethane
Liang, Yujie,Lin, Fengguirong,Adeli, Yeerlan,Jin, Rui,Jiao, Ning
supporting information, p. 4566 - 4570 (2019/02/14)
Although the application of 1,2-dichloroethane (DCE) as a chlorinating reagent in organic synthesis with the concomitant release of vinyl chloride as a useful byproduct is a fantastic idea, it still presents a tremendous challenge and has not yet been achieved because of the harsh dehydrochlorination conditions and the sluggish C?H chlorination process. Here we report a bifunctional electrocatalysis strategy for the catalytic dehydrochlorination of DCE at the cathode simultaneously with anodic oxidative aromatic chlorination using the released HCl as the chloride source for the efficient synthesis of value-added (hetero)aryl chlorides. The mildness and practicality of the protocol was further demonstrated by the efficient late-stage chlorination of bioactive molecules.
A Four-Step Synthesis of (±)-γ-Lycorane via Pd0-Catalyzed Double C(sp2)-H/C(sp3)-H Arylation
Rocaboy, Ronan,Dailler, David,Baudoin, Olivier
supporting information, p. 772 - 775 (2018/02/09)
An expedient synthesis of lycorine alkaloids is reported using a palladium(0)-catalyzed double C-X/C-H arylation as the key step. The selectivity of this reaction was controlled through the judicious choice of the two halogen atoms, and its generality was
Formation of N-acetyl-2,3-dihydroindoles by the electrochemical cleavage of the carbon-chlorine bond in N-allyl-2-chloroacetanilides
Dias, Marylene,Gibson, Mandy,Grimshaw, James,Hill, Ian,Trocha-Grimshaw, Jadwiga,Hammerich, Ole
, p. 549 - 554 (2007/10/03)
The electrochemically induced radical cyclization of N-allyl-2-chloroacetanilides to form N-acetyl-2,3-dihydroindoles has been demonstrated where the phenyl ring contains an electron withdrawing substituent such as cyano. Cyclization of N-allyl-2-chloroacetanilide was successful in the presence of (E)-stilbene as electron transfer agent yielding 1-acetyl-3-methyl-2,3-dihydroindole. Indirect electrochemical reduction of N-cinnamyl-2-chloroacetanilide leads mainly to cleavage of the cinnamyl group and only a low yield of N-acetyl-3-benzyl-2,3-dihydroindole was obtained. Acta Chemica Scandinavica 1998.
Alkanesulfonanilide derivatives, processes for preparation thereof and pharmaceutical composition comprising the same
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, (2008/06/13)
This invention relates to new alkane-sulfonanilide derivatives of the formula: STR1 wherein R1, R2 and R8 are each hydrogen, cyano, halogen, lower alkyl, halo (lower) alkyl, lower alkylthio, lower alkylsulfinyl, lower alkylsulfonyl or lower alkoxy, R3 is lower alkyl, R4 is acyl, cyano, carboxy, hydroxy(lower)-alkyl, mercapto, lower alkylthio, lower alkylsulfinyl, lower alkylsulfonyl, 5-membered unsaturated heterocyclic group which may have amino, lower alkanoylamino, lower alkylthio or lower alkylsulfonyl, phenylthio which may have nitro or amino, lower alkanoyl(lower)alkenyl or a group of the formula: STR2 wherein R6 is hydrogen, amino or lower alkyl and R7 is hydroxy, lower alkoxy, carboxy(lower)alkoxy, lower alkoxycarbonyl(lower)alkoxy, ureido or thioureido, and R5 is hydrogen, halogen, lower alkyl or lower alkanoyl, and pharmaceutically acceptable salts thereof. More particularly, it relates to alkanesulfonanilide derivatives and pharmaceutically acceptable salts thereof which have antiinflammatory activities and analgesic activities, to processes for the preparation thereof, to a pharmaceutical composition comprising the same and to a method for the treatment of inflammatory disease or pains in human being and animals".
