Cyclisation of alkynecarboxylic acids: a route to an oxaspirolactone

M Yamamoto, M Yoshitake, K Yamada

Index: Yamamoto, Makoto; Yoshitake, Makoto; Yamada, Kazutoshi Journal of the Chemical Society, Chemical Communications, 1983 , # 18 p. 991 - 992

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Abstract

We have recently reported that various alkynecarboxylic acids are cyclised in aprotic solvents in the presence of a catalytic ... Published on 01 January 1983. Downloaded by google on 06/05/2016 09:03:38. ... View Article Online / Journal Homepage / Table of Contents for this issue ... Table 1 R Yield, yo (2) (3) a Me 0 68 18 34" b Et 0 64 C Pri 77 Trace d Bun 31 42 e But 81 Trace ... -t 1.r. (neat) 1785 cm-I; 'H nmr 6(CDC13) 1.60(s, 3H), 2.25(m, 2H), 2.55(m, ...