suitable to decarbonylate a wide range of biosourcedsubstrates under mild conditions. The resulting LAOs and LIOs are obtained with good conversion provided that the nature and the quantity of the amines are controlled accurately. The LAO/LIO selectivity can also be tuned by a judicious choice of experimental conditions. Interestingly, the Ir-based catalytic system is applicable to the decarbonylative
Isolation and Total synthesis of the major constituent of the roots ofcentaurea incana : aplotaxene
作者:J. Cossy、P. Aclinou
DOI:10.1016/s0040-4039(00)97313-1
日期:1990.1
The major constituent of the petroleum ether extract of the root of Centaurea incana was identified as (8Z, 11Z, 14Z)-1,8,11,14-heptadecatetraene (Aplotaxene 1). A convergent and highly stereoselective synthesis of this compound is reported.
Boland, Wilhelm; Jaenicke, Lothar, Liebigs Annalen der Chemie, 1981, # 1, p. 92 - 98
作者:Boland, Wilhelm、Jaenicke, Lothar
DOI:——
日期:——
COSSY, J.;ACLINOU, P., TETRAHEDRON LETT., 31,(1990) N2, C. 7615-7618
作者:COSSY, J.、ACLINOU, P.
DOI:——
日期:——
Catalytic Decarbonylation of Biosourced Substrates
decarbonylate a wide range of biosourcedsubstrates under rather mild conditions (160 °C, 5 h reaction time) in the presence of potassium iodide and acetic anhydride. The resulting LAO were obtained with good conversion and selectivity provided that the purity of the substrate, the nature of the ligand, and the amounts of the additives were controlled accurately. The catalytic system could be recovered