... CN:H 2 O, 1:10:1, 25 °C, 2 h, 76%; (j) 5.0 equiv ... Thus, the condensation of N- benzyloxycarbonylglycine phosphonate 33 with m-hydroxybenzaldehyde in the presence ... 1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate, Boc-Val-OH = N-(tert-butoxycarbonyl)- ...