There is provided a morpholine derivative represented by General Formula [1A] or a salt thereof.
(In the formula, a ring A represents a ring represented by General Formula [I]; * represents a bonding position; Z
2
represents CH or the like; Z
1
represents CR
6
or the like; R
6
represents a hydrogen atom or the like; X
1
represents CHR
7
or the like; R
7
represents a hydrogen atom or the like; X
2
represents CH
2
or the like; R
1
and R
2
are the same as or different from each other, and each of R
1
and R
2
represents a hydrogen atom or the like; R
3
, R
4
, and R
5
are the same as or different from each other, and each of R
3
, R
4
, and R
5
represents a hydrogen atom, NR
a
R
b
, or the like; and each of R
a
and R
b
represents a hydrogen atom, a C
1-8
alkyl group which may have a substituent, or the like.)
提供一种由通用式[1A]表示的吗啉衍生物或其盐。
(在该式中,环A代表由通用式[I]表示的环;*代表连接位置;Z
2
代表CH或类似物;Z
1
代表CR
6
或类似物;R
6
代表氢原子或类似物;X
1
代表CHR
7
或类似物;R
7
代表氢原子或类似物;X
2
代表CH
2
或类似物;R
1
和R
2
相同或不同,且R
1
和R
2
中的每一个代表氢原子或类似物;R
3
,R
4
和R
5
相同或不同,且R
3
,R
4
和R
5
中的每一个代表氢原子,NR
a
R
b
或类似物;R
a
和R
b
中的每一个代表氢原子,可能具有取代基的C
1-8
烷基基团,或类似物。)
Ring-Opening Reactions of Epoxides Catalyzed by Molybdenum(VI) Dichloride Dioxide
作者:Dillip Chand、Kandasamy Jeyakumar
DOI:10.1055/s-2008-1032163
日期:2008.3
alcohols, acetonides, and α-alkoxy ketones is achieved by using molybdenum(VI) dichloride dioxide (MoO 2 Cl 2 ) as a catalyst. Alcohol, aldehyde, oxime, tosyl, and TERT-butyldimethylsilyl functional groups are tolerated during the methanolysis and acetonidation of the functionalized epoxides. No polymerization product is observed with any of the epoxides. Direct conversion of epoxides devoid of sensitive
Synthesis of Novel 2-Aminothiophene-3-carboxylates by Variations of the Gewald Reaction
作者:Hans-Peter Buchstaller、Carsten D. Siebert、Ralf H. Lyssy、Ina Frank、Adil Duran、Rudolf Gottschlich、Christian R. Noe
DOI:10.1007/s007060170137
日期:2001.2.15
compounds through variations of the Gewald reaction is presented. Knoevenagel condensation of methylketone derivatives with methyl cyanoacetate and subsequent treatment of the α,β-unsaturated nitriles with sulfur and amine resulted in the corresponding 2-aminothiophenes 5 or isomers 9 and 10 . Reaction of methylketone derivatives bearing a leaving group at the methylgroup under modified Gewald conditions selectively