39246-00-9Relevant academic research and scientific papers
Method for preparing dialdehyde compound by using dicarboxylic acid
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Paragraph 0023; 0024; 0025; 0026; 0027, (2019/05/16)
The invention relates to the technical field of chemical synthesis, and particularly relates to a method for preparing a dialdehyde compound by using dicarboxylic acid. The method disclosed by the invention comprises the following step that under the cata
Synthesis of new cores and their use in the preparation of polyester dendrimers
Twibanire, Jean-D'Amour K.,Al-Mughaid, Hussein,Grindley, T. Bruce
experimental part, p. 9602 - 9609 (2011/01/03)
Six dendrimer and dendron cores terminated by hydroxyl groups that are neither phenolic nor cleavable by hydrogenolysis have been prepared in a consistent one-pot manner from terminal allyl groups by reduction of the product of reductive ozonolysis. Some of the terminal allyl derivatives are new and others have been prepared by new methods. The well-known O-benzylidene derivative of 2,2′-bis(hydroxymethyl)propanoic acid was shown to be the cis-stereoisomer. A new AB3-type anhydride, tris(benzyloxymethyl) acetic anhydride has been prepared. It was demonstrated that these cores and dendrons could be assembled into first and second generation homo- and mixed polyester dendrimers.
Synthesis of naphthalenes and 2-naphthols by the electrophilic cyclization of alkynes
Zhang, Xiaoxia,Sarkar, Sampa,Larock, Richard C.
, p. 236 - 243 (2007/10/03)
A wide variety of substituted naphthalenes are readily prepared regioselectively under mild reaction conditions by the 6-endo-dig electrophilic cyclization of appropriate arene-containing propargylic alcohols by IC1, I 2, Br2, NBS, and PhSeBr. 3-Iodo-2-naphthols have also been prepared in excellent yields by the cyclization of analogous 1-aryl-3-alkyn-2-ones. This methodology readily accommodates various functional groups and has been successfully extended to the synthesis of substituted carbazoles and dibenzothiophenes.
