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p. 62-68
Received: 16 March 1998 / Accepted: 10 July 1998 / Published: 16 March 1999
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| Download PDF Full-text (40 KB) 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.
p. 69-72
Received: 12 May 1998 / Accepted: 5 March 1999 / Published: 16 March 1999
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| Download PDF Full-text (25 KB) 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).
p. 73-80
Received: 12 May 1998 / Accepted: 5 March 1999 / Published: 29 March 1999
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| Download PDF Full-text (31 KB) 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 1 H 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.
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