Hofstraat, Rob G.; Lange, Jos; Scheeren, Hans W., Journal of the Chemical Society. Perkin transactions I, 1988, p. 2315 - 2322
作者:Hofstraat, Rob G.、Lange, Jos、Scheeren, Hans W.、Nivard, Rutger J.F.
DOI:——
日期:——
HOFSTRAAT, ROB G.;LANGE, JOS;SCHEEREN, HANS W.;NIVARD, RUTGER J. F., J. CHEM. SOC. PERKIN TRANS. PT I,(1988) N 8, C. 2315-2322
作者:HOFSTRAAT, ROB G.、LANGE, JOS、SCHEEREN, HANS W.、NIVARD, RUTGER J. F.
DOI:——
日期:——
Hydrogenations of triacetic acid lactone. A new synthesis of the carpenter bee ( ) sex pheromone
作者:R. Bacardit、M. Moreno-Mañas
DOI:10.1016/s0040-4039(01)85553-2
日期:1980.1
under a variety of catalytic conditions, triacetic acidlactone, I, has been hydrogenated to differently oxidized lactones (II, III and V). C-Methylation of one of them, (II) is the key step for a convenient preparation of the carpenter bee sex pheromone.
substituted ,-unsaturated -lactones is presented. An analysis of X-ray crystallographic data for 67 compounds demonstrated a great conformational diversity of the saturated -lactone ring. Besides, ab initio calculations (HF/6-31G*) indicated a very high conformational mobility. Thus, the lowest calculated transition state for the conversion of the half-chair, most stable, conformer of -valerolactone