1) 1,3-dipolar character
1,3-偶极性质
2) 1,3-dipole
1,3-偶极子
3) 1,3-dipolar reaction
1,3-偶极反应
1.
11β-Hydroxy-16β-methyl-16α,17α-methylene-pregna-1,4-dien-3,20-dione, an important chemical intermediate and excellent medicinal candidate, was prepared from prednisolone through 7 steps of methyl- sulfonylation, methylation, dehydration and double 1,3-dipolar reaction followed by double thermal decom- position with the total yield of 23.
由泼尼松龙(Prednisolone)为原料,经甲磺酰化、甲基化、脱水、两次1,3-偶极反应以及其后的两次热分解共7步反应,以23。
4) 1,3-dipolar
1,3-偶极试剂
5) 1,3-dipolar addition
1,3-偶极加成
6) 1,3-dipolar cycloaddition
1,3-偶极环加成
1.
Development of complex in catalytic enantioselective 1,3-dipolar cycloaddition reactions of nitrones;
硝酮1,3-偶极环加成对映选择性配合物催化剂的研究进展
2.
Novel 4-β-D-allopyranosyloxy-α-chloro-benzaldehydeoxime (3) was synthesized by substitution reaction of 2 with t-BuOCl, and novel 3-(4-β-D-allopyranosyloxyphenyl)-4-aryl-5-aryl-1,2,4-oxadiazoline derivatives (5a～5h) have been synthesized by 1,3-dipolar cycloaddition reaction of 3 with Schiff bases 4a～4h.
以豆腐果苷为原料,与盐酸羟胺缩合反应生成4-β-D-吡喃阿洛糖苷-苯甲醛肟(2),2与次氯酸叔丁酯发生取代反应生成4-β-D-吡喃阿洛糖苷-α-氯苯甲醛肟(3);再将3与Schiff碱通过1,3-偶极环加成生成一系列3-(4-β-D-吡喃阿洛糖苷-苯基)-4-芳基-5-芳基-1,2,4-噁二唑啉(5a～5h)。
3.
Six novel 3-(p-methoxyphenyl)-5-aryl-3a,6a-dihydro-4,6-dioxo-pyrrolino[3′,4′-d]isoxazole derivatives(3a~3f) were synthesized by 1,3-dipolar cycloaddition reaction of N-arylmaleimides and 4-methoxybenzonitrile oxide in the presence of Et3N.
在三乙胺作用下,N-取代苯基马来酰亚胺与α-氯代对甲氧基苯甲醛肟发生1,3-偶极环加成反应,合成了6个新型3-(对甲氧基苯基)-5-芳基-3a,6a-二氢-4,6-二氧代氮杂茂并[3′,4′-d]异噁唑衍生物,其结构经1HNMR,IR和元素分析确证。
补充资料：偶而
1.见"偶尔"。
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