نتایج جستجو برای: yield component
تعداد نتایج: 797931 فیلتر نتایج به سال:
a convenient and efficient one-pot four-component synthesis of 1, 2, 4, 5-tetrasubstituted imidazoles using nano tio2 as a recyclable catalyst is reported. the results show that the methodology has several advantages such as low loading of catalyst, excellent yield, short reaction time, operational simplicity and solvent-free conditions.
A simple, mild and high efficient procedure for one pot three component synthesis of 2-amino 4-H chromene derivatives was studied. The reaction was performed in water using aryl aldehydes, malononitrile and resorcinol, phloroglucinol or naphthole in the presence of N-methyl D-glucamine (Meglumine) as a green high efficient catalyst. The reaction was studied in thermal, microwave (MW) and ultras...
A convenient and efficient one-pot four-component synthesis of 1, 2, 4, 5-tetrasubstituted imidazoles using nano TiO2 as a recyclable catalyst is reported. The results show that the methodology has several advantages such as low loading of catalyst, excellent yield, short reaction time, operational simplicity and solvent-free conditions.
To determine the yield stability and adaptability of the genotype of tobacco, 5 genotypes of flue-cured tobacco were evaluated in experiment using a randomized completely block design (RCBD) with three replications at two locations including Rasht and Tirtash tobacco Research Centers (IRAN), during the growing season of 2008-2010 (four environment). The interaction of genotype × environment in ...
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