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Desenvolvimento de catalisadores contendo zinco (II) e porções orgânicas e suas aplicações em reações de tio-Michael
(Universidade Federal da Grande DouradosBrasilFaculdade de Ciências Exatas e TecnologiaUFGD, 2020)
Timing of sperm capacitation appears to be programmed according to egg availability in the female genital tract
(Elsevier Science Inc, 2004-07)
The time course of the level of A23187-induced acrosome reaction between human and rabbit spermatozoa was compared. It was extended in the former (a periodic ovulator) and short in the latter (an induced ovulator). This ...
Radical and type theories (1832-1850) [Freshman organic chemistry]
(Yale University, Open Yale Courses, 2013)
Radical and type theories (1832-1850) [Freshman organic chemistry]
(Yale University, Open Yale Courses, 2016)
Studies on the Michael addition of naphthoquinones to sugar nitro olefins: first synthesis of polyhydroxylated hexahydro-11H-benzo[a]carbazole-5,6-diones and hexahydro-11bH-benzo[b]carbazole-6,11-diones
(PERGAMON-ELSEVIER SCIENCE LTD, 2012)
A strategy for the synthesis of the novel (6bR,7R,8S,9S,10S,10aR)-8-(benzyloxy)-7,9,10-trihydroxy-6b,7,8,9,10,10a-hexahydro-11H-benzo[a]carbazole-5,6-dione is reported. The key steps were the Michael addition of ...
Synthesis of 2-diphenylphosphinoyl-3,5-diaryl-3,4-dihydro-2H-telluropyrans by reaction of chalcones with bis[(diphenylphosphinoyl)methyl]telluride
(Pergamon-Elsevier Science Ltd, 2010-08)
The NaH-promoted tandem Michael addition/intramolecular Wittig-Horner reaction of bis[(diphenylphosphinoyl) methyl]telluride with chalcones stereoselectively afforded trans-2-diphenylphosphinoyl-3,5-diaryl-3,4-dihydro- ...
Formation of 2,2-dimethylchroman-4-ones during the photoinduced rearrangement of some aryl 3-methyl-2-butenoate esters. A mechanistic insight
(Pergamon-Elsevier Science Ltd, 2016-04)
Several aryl 3-methyl-2-butenoate esters upon irradiation lead to the formation of [1,3]-migrated photoproducts, phenol and, surprisingly 2,2-dimethylchroman-4-one derivatives. The starting photochemical reaction takes ...
TANDEM N-ACYLIMINIUM-MICHAEL ADDITION-REACTION - AN EFFICIENT TOTAL SYNTHESIS OF THE QUINOLIZIDINE ALKALOIDS (+/-)-MYRTINE AND (+/-)-LASUBINE-II
(Pergamon-elsevier Science LtdOxfordInglaterra, 1993)