Le, Christine M.; Hou, Xiao; Sperger, Theresa; Schoenebeck, Franziska; Lautens, Mark published an article about the compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane( cas:97739-46-3,SMILESS:CC1(C2)OC(C3)(C)OC2(C)OC3(C)P1C4=CC=CC=C4 ).Safety of 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:97739-46-3) through the article.
Pharmaceutically relevant methylene oxindoles are synthesized by a palladium(0)-catalyzed intramol. chlorocarbamoylation reaction of alkynes. A relatively underexplored class of caged phosphine ligands is uniquely suited for this transformation, enabling high levels of reactivity and exquisite trans selectivity. E.g., in presence of Pd2(dba)3 and 1,3,5,7-tetramethyl-2,4,6-trioxa-8-phenyl-6-phosphaadamantane in toluene, intramol. chlorocarbamoylation of 2-TIPSCCC6H4NBnCOCl gave 96% 3-(chloromethylene)oxindole derivative (E)-I. This report entails the first transition-metal-catalyzed atom-economic addition of a carbamoyl chloride across an alkyne.
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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics