Cyclopentadiene nitroso adducts 1a and ent-1a were synthesised in good yields and good enantiomeric excess from chiral chloro-nitroso derivatives 4 and 5 in the d-mannose and d-ribose series, respectively. The thermal racemisation of these adducts occurred below room temperature. Some other chiral Diels–Alder nitroso adducts were prepared in the d-mandelic, l-prolinol and d-O-methylprolinol series
Stereoselective cycloadditions of chiral acyl-nitroso compounds; hydrolytic reactions of a clyclopentadiene adduct
作者:James P. Muxworthy、James A. Wilkinson、Garry Procter
DOI:10.1016/0040-4039(95)01525-6
日期:1995.10
Treatment of the adduct between the acyl nitroso intermediate derived from (R)-α-hydroxyphenylacetohydroxamic acid and cyclopentadiene, 1, with dilute aqueous acid provides a high yield of the cyclopentene 2 hydrochloride, suitable for further, synthetically useful transformations.
[EN] PREPARATION METHOD FOR (1R,3S)-3-AMINO-1-CYCLOPENTANOL AND SALTS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE (1R,3S)-3-AMINO-1-CYCLOPENTANOL ET DE SES SELS<br/>[ZH] 一种(1R,3S)-3-氨基-1-环戊醇及其盐的制备方法