Addition of sodium derivatives of allyl alcohols (2) to phenylthioacetylene (1) forms adducts (3) which on oxidation and pyrolysis undergo Claisen rearrangement and elimination of benzenesulphenic acid to yield the 2,4-dienals (6).
作者:Siu Min Tan、Anthony C. Willis、Michael N. Paddon‐Row、Michael S. Sherburn
DOI:10.1002/anie.201510925
日期:2016.2.24
combining the powerful twofold diene‐transmissive Diels–Alder chemistry of [3]dendralenes with the simplicity of enamine formation. On mixing at ambient temperature, a simple dienal condenses with a primary or secondary amine to generate the enamine, a 1‐amino‐[3]dendralene in situ, and this participates as a double diene in a sequence of two Diels–Alder events with separate dienophiles. Overall, four
as well as the total synthesis of archazolid F, a highly potent V-ATPase inhibitory, antiproliferative polyketide macrolide, is described. Key features of the synthetic routes include a highly stereoselectivealdol condensation of two elaborate fragments and macrocyclizations either by a Shiina macrolactonization or by a challenging RCM reaction of an octaene substrate. The syntheses unequivocally confirm
A simple synthesis of (±)-2,6-dimethylocta-5(Z),7-diene-4-ol and its attractant activity for the bark beetle Ips typographus
作者:V. V. Veselovsky、A. V. Lozanova、R. R. Khairetdinov、N. V. Vendilo、K. V. Lebedeva
DOI:10.1007/s11172-005-0129-3
日期:2004.10
A simple method for the synthesis of (±)-2,6-dimethylocta-5(Z),7-diene-4-ol possessing a high pheromone activity for the bark beetle Ips typographus was developed.