Direct synthesis of pterocarpans via aldol condensation of phenylacetates with benzaldehydes
โ Scribed by Theunis G. van Aardt; Hendrik van Rensburg; Daneel Ferreira
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- French
- Weight
- 866 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0040-4020
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
3-O-Benzyl-5-deoxy-1,2-O-isopropylidene-a-D-xylo-hexadialdo-1,4-furanose (2) upon treatment with Lirv(TMS)2 at -500 furnished the e&ate which reacted with methyl 2,3,4-tri-Obenzyl-a-D-glucopyranoside-6-ulose (5) to afford two eythro aldols 3 and 4 in 6:l ratio and 43% yield. 5R;6R Confguration was a
The Direct Synthesis of Isoflavans via ฮฑ-Alkylation of Phenylacetates. -Alkylation of phenylacetates (I) with Mom-protected o-hydroxybenzyl bromides [cf. (II)] using lithium isopropylcyclohexylamide in HMPA as base affords 2,3-diphenylpropanoates (III). They can be easily converted to isoflavans (V