41470-72-8Relevant academic research and scientific papers
Facile and Efficient Syntheses of Carboxylic Anhydrides and Amides Using (Trimethylsilyl)ethoxyacetylene
Kita, Yasuyuki,Akai, Shuji,Ajimura, Naomi,Yoshigi, Mayumi,Tsugoshi, Teruhisa,et al.
, p. 4150 - 4158 (2007/10/02)
(Trimethylsilyl)ethoxyacetylene, a stable and easy-handling reagent, serves as an excellent dehydrating agent for the synthesis of carboxylic anhydrides and amides from the corresponding carboxylic acids.By means of this reagent, various types of acid-sensitive carboxylic anhydrides and amides were obtained almost in quantative yields.Twenty-two examples of carboxylic anhydrides and 12 examples of amides were presented.
Synthesis of 4-Acyl- and 4-Alkoxy-carbonylpyrazoles
Al-Saleh, Fowzia S.,Khawaja, Ibtisam K. Al,Joule, John A.
, p. 642 - 645 (2007/10/02)
N'-Aroyl- or N'-acetyl, N'-phenyl- or N'-methyl-hydrazino-derivatives (1) of 1,3-dicarbonyl compounds can be converted by mild base treatment into 5-aryl- or 5-methyl-, 1-phenyl- or 1-methylpyrazoles carrying an acyl or alkoxycarbonyl group at C-4.
