Unusual iodine catalyzed lactonization of γ-methyl-γ,δ-pentenoic acids: A facile synthesis of γ,γ-dimethyl-γ-butyrolactones

Tetrahedron Letters

Volumn 37, Issue 9, 1996, Pages 1441-1444

  Kim, Kyoung Mahn ^a   Ryu, Eung K ^a  

^a Korea Research Institute of Chemical Technology   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

GAMMA BUTYROLACTONE DERIVATIVE;

ARTICLE; CATALYSIS; DRUG SYNTHESIS; NUCLEAR MAGNETIC RESONANCE; REACTION ANALYSIS; STEREOCHEMISTRY;

EID: 0030010232     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4039(96)00026-3     Document Type: Article

References (19)

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18. 3) ; δ 1.51 (s, 3H), 2.99 (d, J= 13.9, 1H), 3.20 (d, J= 10.4, 1H), 3.31 (d, J= 10.4, 1H), 3.34 (d, J = 13.9, 1H), 7.22-7.43 (m, 10H). ; ms (70 eV) m/z (rel. intensity) 368 (M+, 7), 221 (15.4), 178 (11.2), 143 (38.5), 128 (24.3), 91 (100) ; IR : 1759 (s), 1499 (m), 1450 (m), 1296.7 (s), 1163 (s).
19. 3) ; 5 1.50(s, 3H), 1.51(s, 3H),1.62(s, 3H), 2.08(d, 1H, J=13.6), 2.79(d, 1H, J=13.6), 10.38 (br, 1H). ; ms (70 eV) m/z (rel. intensity) 173(M+, 21.9), 128(95.2), 113(56.5), 59(100) ; IR : 3179(s), 1769(s), 1725(s).