Tri( n -butyl)phosphine-promoted domino reaction for the efficient construction of spiro[cyclohexane-1,3'-indolines] and spiro[indoline-3,2'-furan-3',3''-indolines]
Copyright policy )Tri( n -butyl)phosphine-promoted domino reaction for the efficient construction of spiro[cyclohexane-1,3'-indolines] and spiro[indoline-3,2'-furan-3',3''-indolines]
The tri( n -butyl)phosphine-catalyzed reaction of isatylidene malononitriles and bis-chalcones in chloroform at 65 °C afforded functionalized spiro[cyclohexane-1,3'-indolines] in good yields and with good diastereoselectivity. On the other hand, the tri( n -butyl)phosphine-catalyzed reaction of 3-(ethoxycarbonylmethylene)oxindoles and bis-chalcones gave functionalized spiro[cyclohexane-1,3'-indolines] with different regioselectivity. Additionally, the tri( n -butyl)phosphine-promoted domino annulation reaction of isatins and ethyl isatylidene cyanoacetates produced spiro[indoline-3,2'-furan-3',3''-indolines] in satisfactory yields.
- Yangzhou University China (People's Republic of)
spiro[cyclohexane-1,3'-indoline], QD241-441, Science, Q, Organic chemistry, spirooxindole, isatin, spiro[indoline-3,2'-furan-3',3''-indoline], tri(n-butyl)phosphine, Full Research Paper
spiro[cyclohexane-1,3'-indoline], QD241-441, Science, Q, Organic chemistry, spirooxindole, isatin, spiro[indoline-3,2'-furan-3',3''-indoline], tri(n-butyl)phosphine, Full Research Paper
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