Fig. 10. (a) Stick representation of the computed transition state geometry (RM1) leading to the formation of trans-T′ formed through the [L·S] complex. (b) Stick representation of the computed transition state geometry (RM1) leading to the formation of [trans-T·trans-T] through the ternary complex [L·S·T]. Carbon atoms are coloured grey, nitrogen atoms are coloured blue, oxygen atoms are coloured red and hydrogen atoms are coloured white. For clarity, most hydrogen atoms are not shown. Hydrogen bonds with D–H···A distances <2.0 Å are shown as blue dashed lines, hydrogen bonds with D–H···A distances between 2.0 and 2.5 Å are shown as red dashed lines. The transition states for the forming isoxazolidine rings are enclosed in the black dotted lines.
