The title compound of 4-（2-methylene-1-ethyl-3,3-dimethylindoline-2＇-yl）-6,8-dibro-mo-1＇-ethyl-3＇,3＇-dimethylspiro[3,4-dihydro-2H-1-benzopyran-2,2＇-indoline],C33H36Br2N2O,as a dicondensed spiropyran（DC） has b...The title compound of 4-（2-methylene-1-ethyl-3,3-dimethylindoline-2＇-yl）-6,8-dibro-mo-1＇-ethyl-3＇,3＇-dimethylspiro[3,4-dihydro-2H-1-benzopyran-2,2＇-indoline],C33H36Br2N2O,as a dicondensed spiropyran（DC） has been synthesized by indoline in ethanol with 3,5-dibromo-salicyaldehyde.The compound was characterized by elemental analysis and IR spectra.Meanwhile,the crystal of the compound was obtained and determined by X-ray single-crystal diffraction.Crystal data：monoclinic system,space group P21/n,a=12.9699（15）,b=12.5196（13）,c=19.327（2）,β=106.493（3）°,Mr=636.46,V=3009.1（6） 3,Z=4,F（000）=1304,Dc=1.405 g/cm3,μ=2.722 mm-1,R=0.0554 and wR=0.1176 for 6892 independent reflections（Rint=0.0354） and 5699 observed reflections（Ⅰ〉 2σ（Ⅰ））.展开更多
3,6-Diarylidene-2,5-piperazinediones(2)and 3-alkylidene-6-arylidene-2,5-piperazfnediones (6)were synthesized from diacetyl-2,5-piperazinedione(1)under solid-liquid phase transfer catalytic conditions.2 could be easily...3,6-Diarylidene-2,5-piperazinediones(2)and 3-alkylidene-6-arylidene-2,5-piperazfnediones (6)were synthesized from diacetyl-2,5-piperazinedione(1)under solid-liquid phase transfer catalytic conditions.2 could be easily convered to a-amino acid by reducing with zinc powder and hydrolyzing with concentrated hydrochloric acid.The effect of different phase transfer catalysts and reaction con- ditions were studied.展开更多
基金supported by the Natural Science Foundation of Anhui Provincial Education Department (No. KJ2010B463)the Key Subject Program of Jiangsu Province (No. S1109001)
文摘The title compound of 4-（2-methylene-1-ethyl-3,3-dimethylindoline-2＇-yl）-6,8-dibro-mo-1＇-ethyl-3＇,3＇-dimethylspiro[3,4-dihydro-2H-1-benzopyran-2,2＇-indoline],C33H36Br2N2O,as a dicondensed spiropyran（DC） has been synthesized by indoline in ethanol with 3,5-dibromo-salicyaldehyde.The compound was characterized by elemental analysis and IR spectra.Meanwhile,the crystal of the compound was obtained and determined by X-ray single-crystal diffraction.Crystal data：monoclinic system,space group P21/n,a=12.9699（15）,b=12.5196（13）,c=19.327（2）,β=106.493（3）°,Mr=636.46,V=3009.1（6） 3,Z=4,F（000）=1304,Dc=1.405 g/cm3,μ=2.722 mm-1,R=0.0554 and wR=0.1176 for 6892 independent reflections（Rint=0.0354） and 5699 observed reflections（Ⅰ〉 2σ（Ⅰ））.
基金Project supported by the National Natural Science Foundation of China and Modern Analysis Centre of Nanjing University.
文摘3,6-Diarylidene-2,5-piperazinediones(2)and 3-alkylidene-6-arylidene-2,5-piperazfnediones (6)were synthesized from diacetyl-2,5-piperazinedione(1)under solid-liquid phase transfer catalytic conditions.2 could be easily convered to a-amino acid by reducing with zinc powder and hydrolyzing with concentrated hydrochloric acid.The effect of different phase transfer catalysts and reaction con- ditions were studied.
