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- Structure 4 is the reaction intermediate for H2C=C(OH)Na to serve as acyl anion equivalent. H_2C=C(OH)Na具有双重反应性;结构4是发生亲核反应的中间体;发生类卡宾反应时经过类似构型2的中间状态.
- Keywords acyl anion;carbenoid;equivalent;ab intio calculation; 酰基负离子;类卡宾;等效物;从头算;
- Keywords disulfonyl methane;aldehyde;acyl anion;alkylation;reduction;synthesis; 二砜基甲烷;醛;酰基负离子;烃化反应;还原反应;合成;
- acyl anions 酰阴离子
- An acyl derivative of hydrazine. 酰肼一种由肼衍生而来的酰
- How Many Anions Floating in the Midair of Beijing? 首都上空漂浮着多少负离子?
- And also lots of anions in the air here. 而且还含有很多负离子呢。
- An example of the acyl group is the acetyl group. 乙酰基是酰基的一个例子。
- Tannase is an acyl hydrolase of tannin. 单宁酶是水解单宁酯键的酶,用途广泛,具有重要的商业价值。
- A variety of dilute mineral acids are used to extract the anions. 用各种稀的无机酸来萃取阴离子。
- Methods:EFTA is synthesized from EATA by one step:acyl. 方法:以2-氨基-噻唑基-4-乙酸乙酯(EATA)为原料;经氨基甲酰化反应得到 EFTA.
- The aromaticity of C36X cations and anions are interpreted. 对C36X的阳离子和阴离子的芳香性进行了解释。
- How is the function of the anion of air conditioning used? 空调的负离子的功能如何使用?
- It shows a thousandfold selectivity for fluoride over other common anions. 它对氟离子的选择性比其它普通阴离子高几千倍。
- Hence a variety of dilute mineral acids are used to extract the anions. 因此用各种稀的无机酸来萃取阴离子。
- The metal ion and the anion of the mineral acid form an insoluble salt. 金属离子和无机酸的阴离子生成一种难溶的盐。
- Any of three anions,VO3,VO4,or V2O7,containing pentavalent vanadium. 钒酸盐三种阴离子,VO3,VO4,或V2O7之一,含有5价的钒
- If one goes to a place full of anions, one will feel refreshed and energetic. 在负离子充沛的地方,人们感到心旷神怡、精神振奋。
- Of or designating an ion, the anion, that is attracted to a positive electrode. 阴离子的属于或表明离子,阴离子的;对阳电极有吸引力的
- Any of three anions, VO3, VO4, or V2O7, containing pentavalent vanadium. 钒酸盐三种阴离子,VO3,VO4,或V2O7之一,含有5价的钒