Using Fe2(SO4)3/H2SO4 as oxidant, nine N,2-diaryl diazcnecarboxamides weresynthesized from diaryl substituted semicarbazides in excellent yield under mild conditions for thefirst time. This method is simple, convenien...Using Fe2(SO4)3/H2SO4 as oxidant, nine N,2-diaryl diazcnecarboxamides weresynthesized from diaryl substituted semicarbazides in excellent yield under mild conditions for thefirst time. This method is simple, convenient and rapid.展开更多
A series of（Z）-2-chloro-1,3-diarylpropen-1-ones were unexpectedly synthesized in moderate yields by treatment of easily available 2,3-epoxy-1,3-diarylpropan-1-ones with Vilsmeier reagent,which was derived from bis（...A series of（Z）-2-chloro-1,3-diarylpropen-1-ones were unexpectedly synthesized in moderate yields by treatment of easily available 2,3-epoxy-1,3-diarylpropan-1-ones with Vilsmeier reagent,which was derived from bis（trichloromethyl） carbonate（BTC, triphosgene） and DMF.A possible mechanism was also proposed,where sequential ring-opening,halogenation and elimination reactions were involved.展开更多
By using Fe 2(SO 4) 3·6H 2O/H 2SO 4 as the oxidation reagents for dehydrogenating aryl substituted semicarbazide to form azo compounds is described for first time.Eight azo compounds were prepared in excellent yi...By using Fe 2(SO 4) 3·6H 2O/H 2SO 4 as the oxidation reagents for dehydrogenating aryl substituted semicarbazide to form azo compounds is described for first time.Eight azo compounds were prepared in excellent yields under mild condition.This method only needs simple instrument and short reaction time.展开更多
A new and ancient solid-state reaction using K3Fe(CN)(6)/KOII to oxidize diaryl semicarbazides for preparing azo compounds has been reported. Nine N-aryl-2-phenyl-diazenecarboxamides have been synthesized in excellent...A new and ancient solid-state reaction using K3Fe(CN)(6)/KOII to oxidize diaryl semicarbazides for preparing azo compounds has been reported. Nine N-aryl-2-phenyl-diazenecarboxamides have been synthesized in excellent yields with simple instrument.展开更多
A series of 2-amino-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidinyl substituted diaryl urea derivatives was designed and synthesized. Their in vitro cytotoxicities against two cancer cell lines（Bel-7402 and A549） were ev...A series of 2-amino-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidinyl substituted diaryl urea derivatives was designed and synthesized. Their in vitro cytotoxicities against two cancer cell lines（Bel-7402 and A549） were evaluated by standard MTT assay. Six of tested compounds 6, 8, 10, 17, 21 and 22 exhibited more potent cytotoxicity superior to sorafenib. The structure activity relationship（SAR） study indicates that 2-amino-5,6,7,8-tetrahydropyrido- [4,3-d]pyrimidinyl group was an option for cytotoxic potency.展开更多
文摘Using Fe2(SO4)3/H2SO4 as oxidant, nine N,2-diaryl diazcnecarboxamides weresynthesized from diaryl substituted semicarbazides in excellent yield under mild conditions for thefirst time. This method is simple, convenient and rapid.
基金the National Natural Science Foundation of China(Nos.20806073 and 20876147)the National Key Technology Research and Development Program(No.2007BAI34B06) for financial support
文摘A series of（Z）-2-chloro-1,3-diarylpropen-1-ones were unexpectedly synthesized in moderate yields by treatment of easily available 2,3-epoxy-1,3-diarylpropan-1-ones with Vilsmeier reagent,which was derived from bis（trichloromethyl） carbonate（BTC, triphosgene） and DMF.A possible mechanism was also proposed,where sequential ring-opening,halogenation and elimination reactions were involved.
文摘By using Fe 2(SO 4) 3·6H 2O/H 2SO 4 as the oxidation reagents for dehydrogenating aryl substituted semicarbazide to form azo compounds is described for first time.Eight azo compounds were prepared in excellent yields under mild condition.This method only needs simple instrument and short reaction time.
基金the financial support from the Natural Science Foundation of Technology Commission of Henan Province.
文摘A new and ancient solid-state reaction using K3Fe(CN)(6)/KOII to oxidize diaryl semicarbazides for preparing azo compounds has been reported. Nine N-aryl-2-phenyl-diazenecarboxamides have been synthesized in excellent yields with simple instrument.
文摘A series of 2-amino-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidinyl substituted diaryl urea derivatives was designed and synthesized. Their in vitro cytotoxicities against two cancer cell lines（Bel-7402 and A549） were evaluated by standard MTT assay. Six of tested compounds 6, 8, 10, 17, 21 and 22 exhibited more potent cytotoxicity superior to sorafenib. The structure activity relationship（SAR） study indicates that 2-amino-5,6,7,8-tetrahydropyrido- [4,3-d]pyrimidinyl group was an option for cytotoxic potency.
