Synthesis of functionalized homophthalates, salicylates, diaryl ethers and dihydroisocoumarins based on cyclocondensation reactions of 1,3-dicarbonyl compounds and 1,3-bis(silyloxy)-1,3-butadienes Sher, Muhammad , 1977- Text theses Text Hochschulschrift 2008 2008 eng electronic resourceremoteComputermedienOnline-RessourceOnline-Ressource graph. Darst. Regioselective cyclocondensation reactions of 1,3-bis(silyl enol ethers) with different mono(silyl enol ethers) provide an elegant approach for the synthesis of various complex carba- and heterocycles from simple starting materials. Salicylates, diarylethers, resorcins and 3-aryl-3,4-dihydroisocoumarins are prepared based on regioselective [3+3] cyclocondensation reactions of 1,3-bis(silyl enol ethers) with 1,1,3,3-tetramethoxypropane, 2-aryloxy-3-(silyloxy)alk-2-en-1-ones, 3,3-dimethoxypentanoyl chloride and 1-hydroxy-5-silyloxy-4-en-3-ones respectively. In addition, 4,5-diaryl-1,2,3-benzenetricarboxylates are prepared by reaction of 4-hydroxycyclopent-2-en-1-one-2-carboxylates with dimethyl acetylenedicarboxylate. In addition, 1-(2,2-dimethoxyethyl)-1,2,3-triazoles are prepared by regioselective copper(I)-catalyzed [3+2] cyclization of 2-azido-2,2-dimethoxyethane with alkynes. Muhammad Sher Rostock, Univ., Mathematisch-Naturwiss. Fak., Diss., 2008 540 http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2008-0105-5 http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2008-0105-5&pdf http://nbn-resolving.de/urn:nbn:de:gbv:28-diss2008-0105-5 Synthesis of functionalized homophthalates, salicylates, diaryl ethers and dihydroisocoumarins based on cyclocondensation reactions of 1,3-dicarbonyl compounds and 1,3-bis(silyloxy)-1,3-butadienes--(DE-627)584683723 urn:nbn:de:gbv:28-diss2008-0105-5 oclc: 301999217 ppn: (DE-627)587371811