Y(OTf)3 catalyzed substitution dependent oxidative C(sp3)–C(sp3) cleavage and regioselective dehydration of β-allyl-β-hydroxydithioesters: alternate route to α,β-unsaturated ketones and functionalized dienes
摘要:
beta-Allyl-beta-hydroxydithioesters have been generated by the regioselective Grignard addition to the beta-oxodithioesters. They have been successfully employed in selective C(sp(3))-C(sp(3)) bond cleavage to construct alpha,beta-unsaturated ketone residues by the treatment of an emerging catalyst yttrium(III)triflate for the first time. On the other hand, hetaryl substituted beta-allyl-beta-hydroxydithioesters led to the useful diene precursors through selective dehydration under the similar conditions. (c) 2013 Elsevier Ltd. All rights reserved.
Magnesium-Promoted Reductive Carboxylation of Aryl Vinyl Ketones: Synthesis of γ-Keto Carboxylic Acids
作者:Suhua Zheng、Tianyuan Zhang、Hirofumi Maekawa
DOI:10.1021/acs.joc.2c00557
日期:2022.6.3
Direct reductive carboxylation of easily prepared aryl vinylketones under the atmosphere of carbon dioxide led to the selective formation of γ-keto carboxylic acids in 38–86% yields. The reaction is characterized by the carbon–carbon bond formation of carbon dioxide at the β-position of enone, with the use of magnesium turnings that can be easily handled as the reducing agent and the eco-friendly
Katritzky, Alan R.; Rubio, Olga; Aurrecoechea, Jose M., Journal of the Chemical Society. Perkin transactions I, 1984, # 5, p. 941 - 945
作者:Katritzky, Alan R.、Rubio, Olga、Aurrecoechea, Jose M.、Patel, Ranjan C.
DOI:——
日期:——
Y(OTf)3 catalyzed substitution dependent oxidative C(sp3)–C(sp3) cleavage and regioselective dehydration of β-allyl-β-hydroxydithioesters: alternate route to α,β-unsaturated ketones and functionalized dienes
beta-Allyl-beta-hydroxydithioesters have been generated by the regioselective Grignard addition to the beta-oxodithioesters. They have been successfully employed in selective C(sp(3))-C(sp(3)) bond cleavage to construct alpha,beta-unsaturated ketone residues by the treatment of an emerging catalyst yttrium(III)triflate for the first time. On the other hand, hetaryl substituted beta-allyl-beta-hydroxydithioesters led to the useful diene precursors through selective dehydration under the similar conditions. (c) 2013 Elsevier Ltd. All rights reserved.
NOVEL 5-HT2 ANTAGONISTS
申请人:AnaMar AB
公开号:EP3109237A1
公开(公告)日:2016-12-28
The present invention relates to 1-amidino-3-aryl-2-pyrazoline derivatives of the general formula I
The invention specifically relates to such derivatives which exhibit antagonizing activity towards serotonin 5-HT2B receptors. The present invention also relates to use of said compounds as a medicament and for the treatment of fibrosis, cardiovascular diseases, pain, IBD, and other inflammatory diseases, as well as pharmaceutical compositions comprising one or more of said compounds and methods of treatment.