153140-76-2

Upstream product

• 153140-75-1 1-bromo-2-[(Z)-2-bromoethenyl]benzene 
• 74-99-7 prop-1-yne 

Downstream Products

• 163015-96-1 C₂₂H₁₈Se₂ 
• 163015-90-5 C₂₂H₁₈Te₂ 
• 207741-31-9 2-methyl-1,1-di-n-butyl-1-benzostannepine 
• 292614-20-1 bis[(Z)-o-(pent-1-en-3-ynyl)phenyl]di-n-butylstannane 

Relevant academic research and scientific papers

Studies on seven-membered heterocycles. XXXV). Synthesis of the group 16 1-benzoheteroepines involving the first examples of 1-benzotellurepine and 1-benzoselenepine rings

Novel 2-alkyl-1-benzotellurepines (11) and 2-alkyl-1-benzoselenepines (12) were obtained by sodium borohydride reduction of di[o-(1-buten-3-ynyl)phenyl] ditellurides (8) and diselenides (9), together with 2-alkylidene-2H-tellurachromenes (13) and 2-alkylidene-2H-selenachromenes (14), respectively, via the phenyltellurol and phenylselenol intermediates (10). The dimers (8, 9) were readily prepared from the 4-alkyl-1-(o-bromophenyl)-1-buten-3-ynes (7) by successive treatment with tert-butyllithium, tellurium or selenium powder, and potassium ferricyanide in one pot. The 2-alkyl-1-benzothiepines (16) were obtained directly from the enynes (7) by successive treatment with tert-butyllithium, sulfur powder, and ethanol in one pot. To examine the chemical behavior of the novel tellurepine ring, several reactions of 2-tert-butyltellurepine (11c) were carried out.

Synthesis of the First Examples of 1-Benzotellurepines and 1-Benzoselenepines

The novel 2-alkyl-1-benzotellurepines 8 and 2-alkyl-1-benzoselenepines 9 have been obtained by sodium borohydride reduction of the ditelluride 4 and diselenide dimers 5, prepared from 4-alkyl-1-(o-bromophenyl)but-1-en-3-ynes 3 via three steps in one pot,