121743-00-8Relevant articles and documents
Synthesis of 2,3-Dihydro-6-methylthienofuran (Kahweofuran), a Coffee Aroma Component, from an Acyclic Precursor
Brenna, Elizabetta,Fuganti, Claudio,Serra, Stefano,Dulio, Andrea
, p. 551 - 563 (2007/10/03)
Kahweofuran 1, one of the impact flavours of roasted coffee, was obtained from the acyclic unsaturated ester 8, produced in a Stobbe condensation of α-methylcinnamaldehyde 6 with dimethyl succinate 7, through the key intermediate tetrahydrothiophene 14 and the C-7 derivatives 20 or 24, respeectively.
SYNTHESIS OF SUBSTITUTED TETRAHYDROPYRIDINES AND M-HYDROXYBENZOIC ACIDS
Clinch, K.,Marquez, C. J.,Parrott, M. J.,Ramage, R.
, p. 239 - 258 (2007/10/02)
A series of substituted 1,2,3,6- (5) and 1,2,5,6-tetrahydropyridines (6) have been synthesised via intramolecular 1,6-Michael addition of methoxycarbonyl-2,4-dienylamines (10).The kinetics of these reactions have been investigated and an explanation of substituent effects is advanced.Also a new route to m-hydroxybenzoic acids has been established by cyclisation of substituted hexa-3,4:5,6-dienoic acids.