Hydroalkoxylation of Unactivated Olefins with Carbon Radicals and Carbocation Species as Key Intermediates
摘要:
A unique Markovnikov hydroalkoxylation of unactivated olefins with a cobalt complex, silane, and N-fluoropyridinium salt is reported. Further optimization of reaction conditions yielded high functional group tolerance and versatility of alcoholic solvent employed, including methanol, i-propanol, and t-butanol. Use of trifluorotoluene as a solvent made the use of alcohol in stoichiometric amount possible. Mechanistic insight into this novel catalytic system is also discussed. Experimental results suggest that catalysis involves both carbon radical and carbocation intermediates.
Mitochondria protecting agents for treating mitochondria associated diseases
申请人:——
公开号:US20020068750A1
公开(公告)日:2002-06-06
The present invention relates generally to mitochondria protecting agents for treating diseases in which mitochondrial dysfunction leads to tissue degeneration and, more specifically, to compounds, compositions and methods related to the same. The methods of this invention involve administration of a pharmaceutically effective amount of a mitochondria protecting agent to a warm-blooded animal in need thereof, and composition of this invention contain a mitochondrial protecting agent in combination with a pharmaceutically acceptable carrier or diluent. Mitochondrial associated diseases which may be treated by the present invention include (but are not limited to) Alzheimer's Disease, diabetes mellitus, Parkinson's Disease, neuronal and cardiac ischemia, Huntington's disease and stroke.
N-Substituted Carbamic Acid Ester Production Method, Isocyanate Production Method Using Such N-Substituted Carbamic Acid Ester, And Composition For Transfer And Storage Of N-Substituted Carbamic Acid Ester Comprising N-Substituted Carbamic Acid Ester and Aromatic Hydroxy Compound
申请人:Shinohata Masaaki
公开号:US20110133121A1
公开(公告)日:2011-06-09
The present invention is a method for producing an N-substituted carbamic acid ester derived from an organic amine from an organic amine, a carbonic acid derivative and a hydroxy composition containing one or more types of hydroxy compounds, wherein the organic amine, the carbonic acid derivative and the hydroxy composition are reacted using a urethane production reaction vessel provided with a condenser, a gas containing the hydroxy composition, the compound having the carbonyl group derived from the carbonic acid derivative, and an ammonia formed as a by-product in the reaction, is introduced into the condenser provided in the urethane production reaction vessel, and the hydroxy composition and the compound having the carbonyl group derived from the carbonic acid derivative are condensed, and wherein a stoichiometric ratio of a hydroxy compound contained in the condensed hydroxy composition to the condensed compound having the carbonyl group derived from the carbonic acid derivative is 1 or more, and a ratio of number of carbonyl groups (—C(═O)—) contained in the compound having the carbonyl group derived from the carbonic acid derivative and number of ammonia molecules contained in the ammonia recovered as a gas from the condenser is 1 or less.
N-Substituted Carbamic Acid Ester Production Method, Isocyanate Production Method Using Such N-Substituted Carbamic Acid Ester, and Composition for Transfer and Storage of N-Substituted Carbamic Acid Ester Comprising N-Substituted Carbamic Acid Ester and Aromatic Hydroxy Compound
申请人:Asahi Kasei Chemicals Corporation
公开号:US20140194650A1
公开(公告)日:2014-07-10
The present invention is a method for producing an N-substituted carbamic acid ester derived from an organic amine from an organic amine, a carbonic acid derivative and a hydroxy composition containing one or more types of hydroxy compounds, wherein the organic amine, the carbonic acid derivative and the hydroxy composition are reacted using a urethane production reaction vessel provided with a condenser, a gas containing the hydroxy composition, the compound having the carbonyl group derived from the carbonic acid derivative, and an ammonia formed as a by-product in the reaction, is introduced into the condenser provided in the urethane production reaction vessel, and the hydroxy composition and the compound having the carbonyl group derived from the carbonic acid derivative are condensed, and wherein a stoichiometric ratio of a hydroxy compound contained in the condensed hydroxy composition to the condensed compound having the carbonyl group derived from the carbonic acid derivative is 1 or more, and a ratio of number of carbonyl groups (—C(═O)—) contained in the compound having the carbonyl group derived from the carbonic acid derivative and number of ammonia molecules contained in the ammonia recovered as a gas from the condenser is 1 or less.
METHOD FOR PRODUCING N-SUBSTITUTED CARBAMIC ACID ESTER
申请人:ASAHI KASEI KABUSHIKI KAISHA
公开号:EP3153499A1
公开(公告)日:2017-04-12
The present invention is a method for producing an N-substituted carbamic acid ester derived from an organic amine from an organic amine, a carbonic acid derivative and a hydroxy composition containing one or more types of hydroxy compounds, wherein the organic amine, the carbonic acid derivative and the hydroxy composition are reacted using a urethane production reaction vessel provided with a condenser, a gas containing the hydroxy composition, the compound having the carbonyl group derived from the carbonic acid derivative, and an ammonia formed as a by-product in the reaction, is introduced into the condenser provided in the urethane production reaction vessel, and the hydroxy composition and the compound having the carbonyl group derived from the carbonic acid derivative are condensed, and wherein a stoichiometric ratio of a hydroxy compound contained in the condensed hydroxy composition to the condensed compound having the carbonyl group derived from the carbonic acid derivative is 1 or more, and a ratio of number of carbonyl groups (-C(=O)-) contained in the compound having the carbonyl group derived from the carbonic acid derivative and number of ammonia molecules contained in the ammonia recovered as a gas from the condenser is 1 or less.
METHOD FOR PRODUCING ISOCYANATE USING N-SUBSTITUTED CARBAMIC ACID ESTER, AND COMPOSITION FOR TRANSFERRING AND STORING N-SUBSTITUTED CARBAMIC ACID ESTER CONTAINING N-SUBSTITUTED CARBAMIC ACID ESTER AND AROMATIC HYDROXY COMPOUND
申请人:ASAHI KASEI KABUSHIKI KAISHA
公开号:EP3153500A1
公开(公告)日:2017-04-12
The present invention is a method for producing an N-substituted carbamic acid ester derived from an organic amine from an organic amine, a carbonic acid derivative and a hydroxy composition containing one or more types of hydroxy compounds, wherein the organic amine, the carbonic acid derivative and the hydroxy composition are reacted using a urethane production reaction vessel provided with a condenser, a gas containing the hydroxy composition, the compound having the carbonyl group derived from the carbonic acid derivative, and an ammonia formed as a by-product in the reaction, is introduced into the condenser provided in the urethane production reaction vessel, and the hydroxy composition and the compound having the carbonyl group derived from the carbonic acid derivative are condensed, and wherein a stoichiometric ratio of a hydroxy compound contained in the condensed hydroxy composition to the condensed compound having the carbonyl group derived from the carbonic acid derivative is 1 or more, and a ratio of number of carbonyl groups (-C(=O)-) contained in the compound having the carbonyl group derived from the carbonic acid derivative and number of ammonia molecules contained in the ammonia recovered as a gas from the condenser is 1 or less.