Synthesis of 2,3-Dihydrothiopyran-4-ones from 3-Oxo-1-pentene-4-ynes
摘要:
3-Oxo-1-pentene-4-ynes were converted with sodium sulfide or hydrogensulfide to give 2,6-disubstituted 2,3-dihydrothiopyran-4-one derivatives. The starting materials were prepared in two steps from terminal alkynes and alpha,beta-unsaturated aldehydes.
The new, title organosulphurπ-donor and its bistetrafluoroborate have been synthesised from 2,6-diphenyl-2,3-dihydrothiopyran-4-one via the key intermediate 1,2-bis(2,6-diphenyl-2H-thiopyran-4-yl)ethyne.
新的标题有机硫π-供体及其双四氟硼酸酯是通过关键中间体1,2-双(2,6-二苯基-2 H -thiopyran)由2,6-二苯基-2,3-二氢噻喃-4-酮合成的-4-基乙炔。
WEITZ-TYPE ORGANOSULFUR π-DONORS WITH A CUMULENIC BOND. VARIATION OF TERMINAL GROUPS AND CUMULENIC BOND IN BIS(THIOPYRANYLIDENE)ETHENE SYSTEM
作者:Kazuhiro Nakasuji、Kohki Takatoh、Ichiro Murata
DOI:10.1246/cl.1982.1727
日期:1982.11.5
Unsymmetrical bis(thiopyranylidene)ethene (BTPE) derivatives (4) and (5) and an extended analogue of BTPE (6) have been prepared and their electrochemical properties are compared with those reported for the related compounds.
Synthesis of unsymmetrically 2,6-disubstituted 2,3-dihydrothiopyran-4-ones
作者:Anna Rosiak、Jens Christoffers
DOI:10.1016/j.tetlet.2006.05.080
日期:2006.7
A series of 2,3-dihydrothiopyran-4-one derivatives with unequal substituents in the 2- and 6-position have been prepared by double conjugate addition of sulfide to enynones. These starting materials were accessed in two steps from terminal alkynes and alpha,beta-unsaturated aldehydes. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis of unsymmetrical .DELTA.4,4'-2,6-diphenyl-4-(thiopyranyl)-4H-pyrans
作者:Chin H. Chen、George A. Reynolds
DOI:10.1021/jo01300a037
日期:1980.6
CHEN C. H.; PREYNOLDS G. A., J. ORG. CHEM., 1979, 44, NO 18, 3144-3147