1) α-substituted nitroacetate
α-取代硝基乙酸酯
1.
A series of α,α-disubstituted arylglycine precursors were synthesized by chiral thiourea-tertiary amine catalyst(1) through Michael reactions of α-substituted nitroacetates with acraldehyde.
手性硫脲-叔胺催化剂(1)催化α-取代硝基乙酸酯与丙烯醛发生M ichael加成反应,合成了一系列α,α-双取代芳基氨基酸前体(4a~4 j),其结构经1H NMR,13C NMR和ESI-HR-MS表征。
2) substituted (α-carbethoxyvinyl) cuprate intermediates
取代(α-乙酯基乙烯基)铜
3) Ethyl α-acetyl-α-(o-nitrobenzylidene)acetate
α-乙酰基-α-(2-硝基亚苄基)乙酸乙酯
4) α-sulfinyl-butylacetates
α-取代亚磺酰基乙酸丁酯
1.
Three new extractants,α-sulfinyl-butylacetates(SBAB),were synthesized and were used to extracting U(Ⅵ) from nitric acid.
合成了3个α-取代亚磺酰基乙酸丁酯(SBAB),并研究了在硝酸介质中不同稀释剂、水相酸度、萃取剂浓度、萃取温度等对硝酸铀酰萃取性能的影响。
5) α-hydroxyphosphonate
α-羟基取代膦酸酯
1.
The synthesis of α-hydroxyphosphonate compounds were carried out with a high yield at room temperature under phase transfer catalysis,by reactions of diethyl phosphite with six kinds of aromatic aldehyde or a kind of ketone.
在相转移催化条件下用6种芳香醛、1种酮与亚磷酸二乙酯反应,分别得到α-羟基取代膦酸酯类化合物。
6) Ethyl α-aceto-α-(m-nitrobenzylidene)acetate
α-(间硝基亚苄基)乙酰乙酸乙酯
补充资料：D(-)-2-苯基-N-(α-甲基-β-乙酯基乙烯基)氨基乙酸钾
分子式：C14H16NO4K
分子量：301.38
CAS号：961-69-3
性质：白色结晶性粉末。
制备方法：以左旋苯甘氨酸、氢氧化钾和乙酰乙酸乙酯为原料，经成盐，缩合制得该品。
用途：氨苄青霉素、氧哌嗪青霉素、头孢氨苄、头孢氯氨苄等半合成抗生素的中间体。
分子量：301.38
CAS号：961-69-3
性质：白色结晶性粉末。
制备方法：以左旋苯甘氨酸、氢氧化钾和乙酰乙酸乙酯为原料，经成盐，缩合制得该品。
用途：氨苄青霉素、氧哌嗪青霉素、头孢氨苄、头孢氯氨苄等半合成抗生素的中间体。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条