Russian Chemical Bulletin p. 97 - 106 (1998)
Update date:2022-08-02
Topics:
Gromov
Fedorova
Ushakov
Baskin
Lindeman
Malysheva
Balashova
Arsen'ev
Alfimov
Novel styryl dyes (trans-2a,b) containing a 15-crown-5 ether moiety and an N-sulfobenzyl spacer were synthesized. The reactions of trans-2a,b with Mg(ClO4)2 in MeCN afford dimeric complexes. During photolysis of the latter, trans-cis isomerization to give anion-"capped" complexes (cis-2a,b)·Mg2+ and stereospecific [2+2] autocycloaddition to yield cyclobutane derivative occur in parallel. The ratio of the two transformation pathways of dyes 2a,b depends on the spacer type. To interpret the experimental data, the molecular-mechanics and semiempirical quantum-chemical calculations were performed.
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Doi:10.1002/jhet.5570390627
(2002)Doi:10.1039/j39680002385
(1968)Doi:10.1016/S0040-4039(98)01101-0
(1998)Doi:10.1016/S0022-328X(97)00775-4
(1998)Doi:10.1002/ejoc.200800943
(2009)Doi:10.1016/S0022-328X(97)00760-2
(1998)