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Molecules, Volume 4, Issue 3 (March 1999) – 3 articles , Pages 62-80

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Article
Mass Spectra of 2-Substituted Diethyl Malonate Derivatives
by Tae Woo Kwon, Sung Kee Chung and Michael B. Smith
Molecules 1999, 4(3), 62-68; https://doi.org/10.3390/40300062 - 16 Mar 1999
Viewed by 8221
Abstract
Addition of Grignard derivatives to diethyl ethoxymethylene malonate generates 2-substituted diethyl malonate derivatives. This paper reports the mass spectral data for these derivatives. Full article
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25 KiB  
Article
Novel Carbon-Carbon Bond Oxidative Cleavage of Hexabenzylhexaazaisowurtzitane by n-BuONO and (NH4)2Ce(NO3)6
by Xiao-Pei Guan, Hong Yan, Jian-Guang Sun and Yong-Zhong Yu
Molecules 1999, 4(3), 69-72; https://doi.org/10.3390/40300069 - 16 Mar 1999
Cited by 10 | Viewed by 7489
Abstract
Treatment of 2,4,6,8,10,12-hexabenzyl-2,4,6,8,10,12-hexaazatetracyclo-[5.5.0.05,9.03,11]dodecane (1) with n-butyl nitrite or ammonium cerium nitrate results in novel C(1)-C(7) oxidative cleavage to give 1,3,4,5,7,8-hexabenzyl-cis-cisoid-cis-hexahydro-1H,5H-diimidazolinium[4,5-b:4',5'-e]pyrazine dinitrate (2). Full article
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31 KiB  
Article
3-(2-Alkylsulfanyl-6-benzothiazolylaminomethyl)-2-benzoxazolethiones - Synthesis and Photosynthesis-Inhibiting Activity in Spinach Chloropasts
by Eva Sidoova, Katarina Kralova and Dusan Loos
Molecules 1999, 4(3), 73-80; https://doi.org/10.3390/40300073 - 29 Mar 1999
Cited by 12 | Viewed by 6514
Abstract
The synthesis and photosynthesis-inhibiting activity of 14 new 3-(2-alkylsulfanyl-6-benzothiazolylaminomethyl)-2-benzoxazolethiones are reported. The new compounds were prepared by the reaction of 2-alkylsulfanyl-6-aminobenzothiazoles with 3-hydroxymethyl-2-benzoxazolethione. The structures of the compounds were verified by 1H NMR spectra. The compounds inhibit photosynthetic electron transport in spinach [...] Read more.
The synthesis and photosynthesis-inhibiting activity of 14 new 3-(2-alkylsulfanyl-6-benzothiazolylaminomethyl)-2-benzoxazolethiones are reported. The new compounds were prepared by the reaction of 2-alkylsulfanyl-6-aminobenzothiazoles with 3-hydroxymethyl-2-benzoxazolethione. The structures of the compounds were verified by 1H NMR spectra. The compounds inhibit photosynthetic electron transport in spinach chloroplasts. The photosynthetic activity was found to depend on the calculated lipophilicity of the new compounds. Some structure characteristics and quantum chemical parameters were calculated by AM1 method. Full article
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