- Platinum(IV)-Catalyzed Synthesis of Unsymmetrical Polysubstituted Benzenes via Intramolecular Cycloaromatization Reaction
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A one-pot synthesis of polysubstituted benzene derivatives was achieved via a platinum(IV)-catalyzed intramolecular cycloaromatization reaction. The reaction proceeds via a tandem skeletal rearrangment, dehydration and double bond isomerization, which proved to be very useful for the syntheses of a range of interesting polyalkyl-substituted benzenes.
- Zheng, Shuyan,Zhang, Jinghua,Shen, Zhengwu
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supporting information
p. 2803 - 2808
(2015/09/28)
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- USE IN PERFUMERY AND FLAVORING AND PROCESS FOR THE PREPARATION OF 5,5-DIMETHYL-3-ETHYL-3,4-DIHYDROFURAN-2-ONE
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The invention relates to the use of 5,5-dimethyl-3-ethyl-3,4-dihydrofuran-2-one (A), named “Noxolide” by the applicant, as an olfactory agent in perfumery, and also as a food flavouring. The invention also relates to a novel process for the preparation of 5,5-dimethyl-3-ethyl-3,4-dihydrofuran-2-one.
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Page/Page column 2
(2010/05/13)
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- Intramolecular additions of alcohols and carboxylic acids to inert olefins catalyzed by silver(I) triflate
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(Chemical Equation Presented) Intramolecular additions of hydroxyl or carboxyl groups to inert olefins catalyzed by simple silver(I) triflate are described. Good to excellent yields can be obtained for a range of substrates under relatively mild conditions. This reaction represents one of the simplest methods to construct cyclic ethers or lactones.
- Yang, Cai-Guang,Reich, Nicholas W.,Shi, Zhangjie,He, Chuan
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p. 4553 - 4556
(2007/10/03)
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- Bis(aminophosphine)-nickel complexes as efficient catalysts for alkylation of allylic acetates with stabilized nucleophiles
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The alkylation of a variety of allylic acetates with dimethyl malonate catalysed by nickel-diphosphine complexes is reported. It is shown that in most cases bis(aminophosphine) type ligands lead to much more efficient catalysts than dppb and other usual d
- Bricout, Herve,Carpentier, Jean-Francois,Mortreux, Andre
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p. 6105 - 6108
(2007/10/03)
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