Getting more for less: In the presence of H2 and a base, air‐ and moisture‐tolerant RuII complexes catalyze the hydrogenation of ketones and aldehydes with excellent activity and chemoselectivity, and with enantioselectivity of up to 95 % under mild conditions. The ratio of substrate to catalyst can be lowered to 106:1. The reactions tolerate scale‐up and can be carried out with almost no solvent. A base‐free
Total syntheses of sandalwood fragrances: (Z)- and (E)-β-santalol and their enantiomers, ent-β-santalene
作者:Achim Krotz、Günter Helmchen
DOI:10.1016/s0957-4166(00)80544-3
日期:1990.1
Krotz, Achim; Helmchen, Guenter, Liebigs Annalen der Chemie, 1994, # 6, p. 601 - 610
作者:Krotz, Achim、Helmchen, Guenter
DOI:——
日期:——
An Economical and Practical Synthesis of<i>rac</i>-(<i>Z</i>)-β-Santalol: Application of a Scriabine-Inspired Reaction to Alkenes Results in the One-Step Preparation of a Key Intermediate
作者:Anthony A. Birkbeck、Xavier Marquet、Pascal Millet、Hervé Pamingle
DOI:10.1002/ejoc.201403219
日期:2014.12
An economical and practicalsynthesis of rac-(Z)-β-santalol was accomplished. The key coupling step is based on a Scriabine-inspiredreaction of a dienyl diacetate substrate and an alkene. The total synthesis was achieved in five steps (longest linear sequence) in 19 % overall yield from cyclopentadiene.