caa a22 4500 475759362 CHVBK 20180406123546.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/BF02495164 doi (NATIONALLICENCE)springer-10.1007/BF02495164 Heteroorganic betaines [Elektronische Daten] 4. Photolysis and thermolysis of betaines containing the+P−C−Si−S− structural fragment [I. Borisova, N. Zemlyanskii, A. Shestakova, V. Khrustalev, Yu. Ustynyuk, e. Chernyshev] Photolysis and thermal decomposition of betaines R3P−CR1R2−SiR3R4−S− (1) follows two main pathways: (a) a Corey—Chaykovsky type reaction with elimination of Ph3P and generation of silathiirane (2) and (b) a retro-Wittig type reaction accompanied by elimination of R3P=CR1R2 and generation of silanethione R3R4Si=S (3). Highly reactive compounds2 and3 undergo subsequent transformations to give derivatives of tetrahydro-1,4-dithia-2,5-disilin, 1,3-dithia-2,4-disilolane, and phosphonium salts ofsymm-tetraorganodisilthiane dithiolates [Ph3P+CHR1R2]2[(R3R4SiS−)2S]. The structures of the compounds obtained were established by X-ray diffraction analysis and multinuclear NMR spectroscopy. Kluwer Academic/Plenum Publishers, 2000 Wittig reaction nationallicence Corey—Chaykovsky reaction nationallicence betaines nationallicence photolysis nationallicence thermal decomposition nationallicence silathiranes nationallicence silanethiones nationallicence NMR spectroscopy nationallicence X-ray diffraction analysis nationallicence Borisova I. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut Zemlyanskii N. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut Shestakova A. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut Khrustalev V. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation aut Ustynyuk Yu Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russian Federation aut Chernyshev e. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/9(2000-09-01), 1583-1592 1066-5285 49:9<1583 2000 49 11172 https://doi.org/10.1007/BF02495164 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02495164 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Borisova I. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Zemlyanskii N. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Shestakova A. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Khrustalev V. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Ustynyuk Yu Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Chernyshev e. State Research Center of the Russian Federation "State Research Institute of Chemistry and Technology of Organoelement Compounds”, 38 sh. Enthuziastov, 111123, Moscow, Russian Federation aut NATIONALLICENCE 773 0- Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/9(2000-09-01), 1583-1592 1066-5285 49:9<1583 2000 49 11172 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 475759362 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer