Diphenylarsino-2 -diphenylphosphino-1,1 binaphthyl

Summarizing the results obtained with BINAP, with the new diarsine hgand mentioned in Sect. 4.1.1, and with bisoxazohne 109, it seems evident that various donor atoms (N, P, As) can be contained in hgands which provide the best solution to a given AHR problem. Accordingly, very recently 2-diphenylarsino-2 -diphenylphosphino-l,l -binaphthyl (BINAPAs) has been synthesized and successfully apphed in AHRs of a system similar to 91 with superior reactivity compared to BINAP [83]. 

Cho, S.-Y. and Shibasaki, M. (1998) Synthesis and evaluation of a new chiral ligand 2-diphenylarsino-2 -diphenylphosphino-l-l -binaphthyl (BINAPAs). Tetrahedron Lett., 39, 1173-6. 

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