This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation.
本文讨论了通过克莱森缩合反应合成5甲基异唑3甲酰胺工艺的改进。
By exploring the properties of more potential solvents, such as sulfuric acid and formamide, the researchers hope to expand the potential life-supporting zone.
科学家希望，通过研究更多潜在溶剂如硫酸和甲酰胺等的特性，适宜居住圈的范围能够进一步扩大。
The potential energy barriers of hydrogen migration of the N-fluoro-formamide are lower than that of formamide.
氟代甲酰胺的氢迁移势垒低于甲酰胺的氢迁移势垒。
Several kinds of novel extraction solvents were presented which mainly included N - formylmorpholine, dimethyl formamide, etc.
介绍了石油化工领域采用的几种优良抽提剂，包括N-甲酰吗啉、二甲基甲酰胺等。
Thermoplastic starch (TPS) plasticized with mixture of urea and formamide (UFPTPS) could effectively restrain the starch retrogradation.
使用尿素和甲酰胺混合塑化剂制备的热塑性淀粉(UFPTPS)可以有效抑制淀粉的回生。
Cellulose acetate (ca) ultrafiltration membranes are made from casting solutions obtained by dissolving ca in acetone-formamide mixed solvent.
本工作把醋酸纤维素溶解于丙酮-甲酰胺混合溶剂中，随后制成膜。
Using potassium silicate as silicon source, formamide as catalyst, a series of silica xerogel monolithic columns with different consistencies were prepared.
以硅酸钾为硅源，甲酰胺为催化剂在毛细管内原位聚合形成干凝胶柱，制备了一系列致密度不同的整体柱。
This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation of diethyl oxalacetate followed by cyclization and ammonolysis.
讨论了以草酸二乙酯为原料，经过克莱森缩合、环合、氨解反应合成5甲基异唑3甲酰胺工艺的改进。
The contact angles of formamide on the carbon fibres under n-alkane were measured by means of electrobalance and the surface free energy and its components of the fibres were obtained.
用电子天平法，以正烷烃-甲酰胺-炭纤维体系间接地求得了炭纤维的表面自由能及其分量。
Formamide could effectively restrain the starch retrogradation.
结果表明甲酰胺可以有效抑制淀粉回生。
Formamide could effectively restrain the starch retrogradation.
结果表明甲酰胺可以有效抑制淀粉回生。
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