Asymmetric induction in nitrile oxide cycloadditions to 3-butene-1,2-diol and derivatives
作者:Volker Jäger、Rudolf Schohe、Erich F Paulus
DOI:10.1016/s0040-4039(00)94123-6
日期:1983.1
Nitrile oxide cycloadditions to 3-butene-1,2-diol and derivatives thereof show varying degrees of erythro selectivity, ranging from 0 to ca. 0.9 kcal/mol. Some of these results are rationalized qualitatively on the basis of the Felkin-Anh-Houk model.
Die vorliegende Erfindung betrifft primär die Verwendung von Dioxolanen der nachfolgenden Formel (I) als Riech- und/oder Aromastoff, bestimmte Riechstoff- und/oder Aromastoffkompositionen umfassend diese Dioxolane sowie entsprechende parfümierte und/oder aromatisierte Artikel.
Ferner betrifft die vorliegende Erfindung ein Verfahren zur Herstellung der Dioxolane der Formel (I) sowie bestimmte neue Dioxolane gemäß der Formel (I).
Effect of a proximal oxygen substituent on the efficacy of ruthenium-catalyzed cross-metathesis and RCM
作者:Tarun K Maishal、Dilip K Sinha-Mahapatra、Kavita Paranjape、Amitabha Sarkar
DOI:10.1016/s0040-4039(02)00111-9
日期:2002.3
Ruthenium-catalyzed cross-metathesis of various derivatives of 1,2-dihydroxy-3-butene reveals that cyclic acetals are best suited as substrates compared to acyclic diethers or diacetates, while RCM is relatively insensitive to the presence of allylic or homoallylic hydroxy or acetoxy groups. (C) 2002 Elsevier Science Ltd. All rights reserved.
JAEGER, V.;SCHOHE, R.;PAULUS, E. F., TETRAHEDRON LETT., 1983, 24, N 49, 5501-5504
作者:JAEGER, V.、SCHOHE, R.、PAULUS, E. F.
DOI:——
日期:——
Process for preparing ethylene interpolymers and ethylene interpolymers obtained therefrom