M. Giasuddin Ahmed, Syeda Asghari Ahmed, S. Mosaddeq Ahmed, M. Mahmun Hossain et al.
Spiro compounds 7,11-diaryl-2,4-diazaspiro[5.5]undecane-1,3,5,9-tetraones 3a–e and 7,11-diaryl-3-thioxo-2,4-diazaspiro[5.5]undecane-1,5,9-triones 3f–j were prepared from the reaction of 1,5-diaryl-1,4-pentadien-3-ones 2a–f with barbituric acid (1a) and 2-thiobarbituric acid (1b). The structures of t...
M. Giasuddin Ahmed, Syeda Asghari Ahmed, Kawsari Akhter, Syed M. Iqbal Moeiz et al.
The reaction of methacryloyl chloride with the morpholine enamine 4a derived from 4-acetyl-4-isopropenylcyclo-hexanone 3a gave 4,6-anti-6-hydroxy-5,6-dimethyl-7-isopropenyladamantane-2,4-dione 6a and 4,6-syn-6-hydroxy-5,6-dimethyl-7-isopropenyladamantane-2, 4-dione 7a as racemates epimeric at 6-C. C...
M. Giasuddin Ahmed, Syeda Asghari Ahmed, S. Mosaddeq Ahmed, M. Mahmun Hossain et al.
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Shakil Ahmed, M. Giasuddin Ahmed, Syeda Asghari Ahmed, UKR Romman et al.
Abstract A number of 8-aroyl-9-hydroxy-7,9,11-triaryl-3-oxo(or thioxo)-2,4-diazaspiro[5.5]undecane-1,5-diones 3a–g were synthesized from the reaction of 1,3-diaryl-2-propen-1-ones 2a–d with barbituric acid 1a and 2-thiobarbituric acid 1b in 50% aqueous ethanol under refluxing conditions without usin...
Syeda Asghari Ahmed, Kawsari Akhter, Yoshisuke Tsuda, M. Mahmun Hossain et al.
Abstract Morpholine enamines 4‐acetyl‐4‐methyl‐1‐morpholinocyclohexene 4a, 4‐acetyl‐4‐phenyl‐1‐morpholinocyclohexene 4b, and 4‐acetyl‐4‐isopropenyl‐1‐morpholinocyclohexene 4c react with methacryloyl chloride to give 1,7‐dimethyl‐4(N‐morpholino) tricyclo[5.3.1.04,9]undecan‐2,6‐dione 9a , 1‐phenyl‐7‐m...
Shakil Ahmed, M. Giasuddin Ahmed, Syeda Asghari Ahmed, UKR Romman et al.
ChemInformVolume 43, Issue 35 Heterocyclic Compounds ChemInform Abstract: Synthesis of 8-Aroyl-9-hydroxy-7,9,11-triaryl-3-oxo(or thioxo)-2,4-diazaspiro[5.5]undecane-1,5-diones. S. Mosaddeq Ahmed, S. Mosaddeq Ahmed Dep. Chem., Univ. Dhaka, Dhaka 1000, BangladeshSearch for more papers by this authorM....
M. Giasuddin Ahmed, Syeda Asghari Ahmed, Kawsari Akhter, Yoshisuke Tsuda et al.
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
M. Giasuddin Ahmed, Syeda Asghari Ahmed, Kawsari Akhter, Syed M. Iqbal Moeiz et al.
Abstract For Abstract see ChemInform Abstract in Full Text.