The dissociation mechanism of electron rich olefins into their parent carbenes has been a controversial topic since Wanzlick’s pioneering work. Herein, we present a combined synthetic and computational study on...
Synthesis of 6-subsituted-2,10-dibromodibenzo [d,g] [1,3,6,2]dioxathiaphosphocin 6-sulfides (3a-l) has been accomplished in a two-step process. Reaction of 5,5'-dibromo-2,2'-dihydroxydiphenyl sulfide 1 and thiophosphoryl chloride in equimolar quantities in the presence of triethylamine as a base and DMAP as a catalyst in anhydrous toluene afforded the intermediate 6-chloro-2,10-dibromodibenzo [d,g][1,3,6,2]dioxathiaphosphocin 6-sulfide 2. Subsequent reaction of the monochloride 2 with sodium phenoxides/ thiophenoxides afforded the title compounds. All the compounds showed moderate activity against bacteria and fungi.
The [4+2] cycloaddition reaction of aromatic aldehydes with 2,3-dimethyl-1,3-butadiene catalyzed by various iron(III) porphyrins is studied. The results show that the anionic ligand of the catalyst plays a crucial role. -(SINGH, M. K.; KUMAR, M.; BANDYOPADHYAY*, D.; J. Indian Chem. Soc. 92 (2016) 12, 1799-1803 ; Dep. Chem., Indian Inst. Technol. Delhi, New Delhi 110 016, India; Eng.) -M. Bohle 45-133
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