117516-62-8

Upstream product

• 98-54-4 para-tert-butylphenol 
• 621-62-5 chloroacetaldehyde diethyl acetal 
• 2032-35-1 Bromoacetaldehyde diethyl acetal 

Downstream Products

• 72928-50-8 (4-tert-butyl-phenoxy)-acetaldehyde 
• 70855-00-4 2C₁₃H₂₀N₄O*H₂O₄S 
• 1370283-14-9 C₂₁H₂₃N₃O₃S 
• 1370283-19-4 C₂₁H₂₃N₃O₂S₂ 

Relevant academic research and scientific papers

The synthesis of some new hydrazone derivatives containing the benzothiazole moiety

Hydrazones are an important class of compounds found in many synthetic products. Due to their importance in synthetic chemistry, the present article reports the synthesis of a new series of ten compounds based on the coupling of 2-oxo-3(2H)-benzothiazoleacetic acid, hydrazide and 2-thioxo-3(2H)- -benzothiazoleacetic acid, hydrazide with different aldehydes. The structures of the synthesized compounds were confirmed by elemental analyses, IR, 1H- -NMR, 13C-NMR and FAB+-MS spectral data. Copyright 2012 (CC) SCS.

Enantio- and Diastereoselective, Complete Hydrogenation of Benzofurans by Cascade Catalysis

We report an enantio- and diastereoselective, complete hydrogenation of multiply substituted benzofurans in a one-pot cascade catalysis. The developed protocol facilitates the controlled installation of up to six new defined stereocenters and produces architecturally complex octahydrobenzofurans, prevalent in many bioactive molecules. A unique match of a chiral homogeneous ruthenium-N-heterocyclic carbene complex and an in situ activated rhodium catalyst from a complex precursor act in sequence to enable the presented process.

Visible light-induced monofluoromethylenation of heteroarenes with ethyl bromofluoroacetate

Visible light-induced monofluoromethylenation of benzofurans and benzothiophenes with ethyl bromofluoroacetate was developed. This method provided a convenient access to novel α-fluoro-α-heteroarylesters under mild reaction conditions.

A Pincer Ruthenium Complex for Regioselective C-H Silylation of Heteroarenes

A pincer Ru(II) catalyst for the highly efficient undirected silylation of O- and S-heteroarenes with (TMSO)2MeSiH and Et3SiH is described, producing heteroarylsilanes with exclusive C2-regioselectivity, good functional-group tolerance, and high turnover numbers (up to 1960). The synthetic utility of the silylated products is demonstrated by Pd-catalyzed Hiyama-Denmark cross-coupling under mild conditions. One-pot, two-step silylation and coupling procedures have been also developed.

Zeolite-catalyzed synthesis of 2,3-unsubstituted benzo[b]furans via the intramolecular cyclization of 2-aryloxyacetaldehyde acetals

An efficient and environmentally benign heterogeneous catalytic process for the synthesis of 2,3-unsubstituted benzo[b]furans has been established via the intramolecular cyclization of 2-aryloxyacetaldehyde acetals. By utilizing tin-exchanged H-β zeolite (Sn-β) as catalyst, a wide range of functionalized 2,3-unsubstituted benzo[b]furans could be prepared in good to excellent yields. The Sn-β zeolite catalyst also exhibited excellent shape selectivity on the cyclization of meta-substituted 2-aryloxyacetaldehyde acetals, and 6-substituted isomers were preferably formed up to 97% regio-selectivity. Moreover, Sn-β zeolite could be easily recovered and reused without any noticeable activity loss.

PREPARATION AND CYCLIZATION OF ARYLOXYACETALDEHYDE ACETALS; A GENERAL SYNTHESIS OF 2,3-UNSUBSTITUTED BENZOFURANS

A improved method for the preparation of 2,3-unsubstituted benzofurans is described.Specifically, the PPA catalysed cyclization of aryloxyacetaldehyde acetals to give (4-7)-substituted benzofurans has been achieved.