Ligand-controlled iridium-catalyzed semihydrogenation of alkynes with ethanol: highly stereoselective synthesis of <i>E</i>- and <i>Z</i>-alkenes
作者:Jinfei Yang、Chengniu Wang、Yufeng Sun、Xuyan Man、Jinxia Li、Fei Sun
DOI:10.1039/c8cc09714c
日期:——
iridium-catalyzed semihydrogenation of alkynes to E- and Z-alkenes with ethanol was developed. Effective selectivity control was achieved by ligand regulation. The use of 1,2-bis(diphenylphosphino)ethane (DPPE) and 1,5-cyclooctadiene (COD) was critical for the stereoselective semihydrogenation of alkynes. The general applicability of this procedure was highlighted by the synthesis of more than 40 alkenes, with
Listvan, V. N.; Gonchar, G. V.; Rudenko, E. S., Journal of Organic Chemistry USSR (English Translation), 1981, vol. 17, p. 1528 - 1533
作者:Listvan, V. N.、Gonchar, G. V.、Rudenko, E. S.、Onishchenko, T. A.、Stasyuk, A. P.
DOI:——
日期:——
One-pot palladium-catalyzed highly chemo-, regio-, and stereoselective synthesis of trans-stilbene derivatives. A concise and convenient synthesis of resveratrol
作者:Tuyet Jeffery、Benoı̂t Ferber
DOI:10.1016/s0040-4039(02)02317-1
日期:2003.1
A convenient, efficient and highly chemo-, regio-, and stereoselective one-flask synthetic method is reported for the construction of unsymmetrical (or symmetrical) trans-stilbene derivatives based on two sequential Heck-type reactions using tetraalkylammonium salt-based catalyst systems and vinyltrimethylsilane as double bond equivalent. Resveratrol has thus been concisely synthesized. (C) 2002 Elsevier Science Ltd. All rights reserved.
LISTVAN, V. N.;GONCHAR, G. V.;RUDENKO, E. S.;ONISHCHENKO, T. A.;STASYUK, +, ZH. ORGAN. XIMII, 1981, 17, N 8, 1711-1716
作者:LISTVAN, V. N.、GONCHAR, G. V.、RUDENKO, E. S.、ONISHCHENKO, T. A.、STASYUK, +
DOI:——
日期:——
ORGANIC ELECTROLUMESCENCE DEVICE
申请人:Hosokawa Chishio
公开号:US20070142671A1
公开(公告)日:2007-06-21
Materials for organic electroluminescence devices are represented by following general formula [1]:
wherein A represents a chrysene group, X
1
to X
4
each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X
1
and X
2
may be bonded to each other, X
3
and X
4
may be bonded to each other, Y
1
to Y
4
each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, a+b+c+d≧0;
general formula [2] being:
wherein R
1
to R
4
each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R
1
and R
2
or R
3
and R
4
, Z represents a substituted or unsubstituted aryl group having 6 to 20 carbon atoms and n represents 0 or 1.