5.9
[1]. Heather K Lenker, et al. Phospha-Michael additions to activated internal alkenes: steric and electronic effects. J Org Chem. 1 Feb ;77():178-85.
H+H1+H-H15-H19-H5
P61-P64-P7-P71-P8-P+P5-P4+P4-P-P6+P64-P45-P51
GHS7
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