SDS of cas: 93-97-0. Recently I am researching about ENE-TYPE CYCLIZATION; ASYMMETRIC DEAROMATIZATION; 1,6-ENYNES; INDOLES; RHODIUM; ENYNES; CONSTRUCTION; 1,7-ENYNES; COMPLEXES; ALKALOIDS, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21702184, 21772175, 22071217, 91956117]. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Liang, RX; Song, LJ; Lu, JB; Xu, WY; Ding, C; Jia, YX. The CAS is 93-97-0. Through research, I have a further understanding and discovery of Benzoic anhydride
The extensively developed ene-type enantioselective cycloisomerization of classical 1,n-enynes provides an efficient approach to chiral cyclic 1,4-dienes. In contrast, the catalytic asymmetric heteroarenyne (heteroarene-alkyne) cycloisomerization involving the dearomative transformation of endocyclic aromatic C=C bonds remains unknown. Herein, we communicate a PdH-catalyzed enantioselective heteroarenyne cycloisomerization reaction of alkyne-tethered indole substrates (formal 1,5- and 1,6-enynes). Based on this strategy, a variety of structurally diverse chiral spiro and fused indoline derivatives bearing quaternary stereocenters and exocyclic C=C bonds are afforded in moderate to excellent yields and excellent enantioselectivities (up to 98 % ee). The classical ene-type enantioselective 1,5-enyne cycloisomerization of N-vinylpropiolamides is also developed to afford chiral 2-pyrrolones in good to excellent ee values.
SDS of cas: 93-97-0. About Benzoic anhydride, If you have any questions, you can contact Liang, RX; Song, LJ; Lu, JB; Xu, WY; Ding, C; Jia, YX or concate me.
Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com