(11aS)-(+)-5,6,10,11,12,13-Hexahydro-5-phenyl-4H-diindeno[7,1-cd:1’,7’-ef]phosphocin, min. 97% (S)-SITCP

Technical Note:
1. Phosphine -catalyzed intra-and intermolecular gamma-addition of nitrogen nucleophiles to allenoates and alkynoates.
2.Catalytic asymmetric construction of the tryptanthrin skeleton via enantioselective decarboxylativo [4+2] cyclization.
3.Catalytic, enantioselective carbon-oxygen bond formation - phosphine-catalyzed synthesis of benzylic esters via oxidation of benzylic C-H bonds.
4.Use of a new spirophosphine to achieve catalytic, enantios elective [4+ 1] annulations of amines with allenes to generatedihydropyrroles.
References:
1.Angew. Chem. Int. Ed.2013, 52, 2525. 2.Org. Lett.. 2017, 19, 3219
3.J. Am. Chem. Soc.. 2016, 138, 12069. 4.J. Am. Chem. Soc.. 2015, 137, 3803