Hanessian s procedure

Deoxy-D-erythro-pentose (2 1) has been elaborated from 2,3-0-isopropylldene-D-glyceraldehyde (25) either by a stereoselective dipolar cycloaddition reaction (Scheme 6, route a)" or by a stereoselective aldol condensation involving a boronated ester enolate reagent (route b). The DL-analogue of (24) has been synthesized from 1,3 2,4-di- -benzylidene-erythrltol by mono-bromination (Hanessian s procedure with NBS) to give a l-bromo-3- -benzoate,... 

---

See also in sourсe #XX -- [ , ]

---