A novel consecutive three-component Heck-isomerization-Wittig sequence by way of in situ generated aldehydes
作者:Jesco Panther、Adalbert Röhrich、Thomas J. J. Müller
DOI:10.3998/ark.5550190.0013.321
日期:——
A novelconsecutivethree-component four step synthesis of 5-(hetero)arylpent-2-enoates has been disclosed. Various (hetero)aryl iodides can be coupled with allyl alcohol under Heck conditions to give 3-(hetero)arylpropionaldehyde in termediates, which were transformed without isolation with in situgenerated stabilized phosphorus ylides to furnish 5-(hetero)arylpent-2enoates in moderate to excellent
Disclosed is a two-step process to make a dialdehyde. In the process a diepoxide is first hydrolyzed with an alcohol solvent to an intermediate which is then subjected to a double-Pinacol rearrangement to obtain a dialdehyde. The dialdehydes have utility as chemical intermediates, and particular utility in processes to make enol ether compounds which can be used in applications as plasticizers, diluents, wetting agents, coalescing aids and as intermediates in chemical processes.
Disclosed are aromatic enol ethers that have utility as film-hardening additives for coating formulations. The aromatic enol ethers have particular utility as film-hardening additives for water-based coating formulations. The aromatic enol ethers provide improvements in hardness and hardness related properties such as block resistance without contributing to the volatile organic content of the composition.
Disclosed are aromatic enol ethers that have utility as film-hardening additives for coating formulations. The aromatic enol ethers have particular utility as film-hardening additives for water-based coating formulations. The aromatic enol ethers provide improvements in hardness and hardness related properties such as block resistance without contributing to the volatile organic content of the composition.
Disclosed are aromatic enol ether compounds that have utility as film-hardening additives for coating formulations. The aromatic enol ether compounds have particular utility as film-hardening additives for water-based coating formulations. The aromatic enol ether compounds provide improvements in hardness and hardness related properties such as block resistance, without contributing to the volatile organic content of the coating formulation.