A thermosensitive recording material comprising a support member and a thermosensitive layer formed on the support member, which thermosensitive layer contains a colorless or light-colored leuco dye and acidic material, capable of forming a color upon application of heat to the thermosensitive layer, and at least one amide compound selected from the group consisting of amide compounds represented by the formulas ##STR1## wherein R.sub.1 represents an alkyl group with 1 to 30 carbon atoms, a phenyl group or a substituted phenyl group; R.sub.2 represents hydrogen or an alkyl group with 1 to 4 carbon atoms; R.sub.3 represents an alkyl group with 1 to 30 carbon atoms; R.sub.4 and R.sub.5 individually represent hydrogen, a halogen atom, an alkyl group with 1 to 4 carbon atoms or an alkoxy group with 1 to 4 carbon atoms; and n is an integer, 0 or 1, whereby image formation is improved with respect to the image density, the quantity of energy required for image formation, and thermal head operation on the thermosensitive recording material, and a compound represented by the formula ##STR2## wherein R.sub.6 and R.sub.7 individually represent an alkyl group with 10 to 30 carbon atoms, whereby prevention of discoloration of the recording material by pressure or friction is achieved.
Disclosed is a selective ester production process of an alcoholic hydroxyl group, which proceeds under chemically mild conditions, while having adequate environmental suitability, operability and economical efficiency. Specifically disclosed is a process for producing an ester compound, which is characterized in that an alcohol and a carboxylic acid ester compound are reacted in the presence of a compound containing zinc element, thereby selectively acylating a hydroxyl group of the alcohol.
The present invention describes compounds deriving from chemical reactions between saturated or monounsaturated acyl derivatives and primary amines or primary alcohols that display specific cannabinoid-like pharmacological activity without exhibiting the central unwanted side effects typical of synthetic cannabinoids or endocannabinoids acting on central cannabinoid (CB1) receptors. These compounds, having this pharmacological activity, may be utilised to prevent or to treat pathological conditions and diseases in mammals, including human subjects, that may undergo a clinical improvement upon their administration.
Radical mediated-direct conversion of aldehydes into acid bromides
作者:Dong Ho Kang、Tae Young Joo、Warinthorn Chavasiri、Doo Ok Jang
DOI:10.1016/j.tetlet.2006.11.013
日期:2007.1
A method of preparing acid bromides directly from aldehydes with Br3CCO2Et under radical conditions was developed. Aromatic aldehydes with electron-donating group were found to be more reactive than aromatic aldehydes with electron-withdrawing group and aliphatic aldehydes under reaction conditions. (c) 2006 Elsevier Ltd. All rights reserved.
AVRAMOVICI-GRISARU, S.;SAREL, S., NOUV. J. CHIM., 1982, 6, N 10, 455-457