Table 3.
Stereoselective Synthesis of Trisubstituted α-Hydroxycyclopropyl Carbinols
![]() | |||
---|---|---|---|
entry | cyclopropyl boronate ester |
α-hydroxy cyclopropyl carbinol |
Isolated yield (%)a |
1 | ![]() |
![]() |
89b |
2 | ![]() |
![]() |
93b |
3 | ![]() |
![]() |
91 |
4 | ![]() |
![]() |
90 |
5 | ![]() |
![]() |
86 |
6 | ![]() |
![]() |
88 |
7 | ![]() |
![]() |
75b |
8 | ![]() |
![]() |
80 |
Only one diastereomer detected by 1H NMR.
Syn stereochemistry of α-hydroxycyclopropyl carbinols established by single crystal X-ray diffraction.