72209-52-0Relevant articles and documents
3D Nanoporous FeAl-KIT-5 with a cage type pore structure: A highly efficient and stable catalyst for hydroarylation of styrene and arylacetylenes
Varghese, Shaji,Nagarajan, Samuthira,Benzigar, Mercy R.,Mano, Ajayan,Alothman, Zeid A.,Raj, George Allen Gnana,Vinu, Ajayan
, p. 1485 - 1489 (2012)
A novel bimetallic nanoporous FeAl-KIT-5 catalyst with a cage type porous structure and a high surface area has been prepared for the hydroarylation of styrene and arylacetylenes to afford 1,1-diarylalkanes and 1,1-diarylalkenes, respectively. The catalyst was found to be highly active, and selective, affording a high yield of substituted alkanes and alkenes. The catalyst also showed much higher activity as compared to those of other nanoporous catalysts such as AlSBA-15, AlKIT-5, and FeKIT-5, and can be reused several times without much loss of its activity.
Preparation method of alkylphenol compounds
-
Paragraph 0046-0048, (2020/04/29)
The invention provides a method for preparing alkylphenol compounds from phenol compounds and olefin. The method has the characteristics of cheap and easily available raw materials, simple reaction system, simplicity in reaction operation, wide substrate range, compatibility with groups such as CHO and COOH, and excellent regioselectivity, generates no overalkylation products due to only alkylation of phenol and no influence on common aryl groups, and can be used for modifying drug intermediates. The method mainly solves the problems of harsh conditions such as use of a strong Lewis catalyst,poor functional group compatibility, poor selectivity, need of prefabrication of a catalyst material and the like in other methods, and H3PO3 plays a dual role in the same system, can promote alkene to generate carbocations, and also can inhibit isomerization of phenol.
Hydroarylation of alkynes and alkenes through alumina-sulfuric acid catalyzed regioselective C–C bond formation
Pramanik, Amit,Ghatak, Avishek,Khan, Sagar,Bhar, Sanjay
supporting information, p. 1091 - 1095 (2019/03/26)
A highly atom-efficient synthetic protocol for hydroarylation of terminal-aryl alkynes and styrene through the regioselective C–C bond formation via the electrophilic addition of naphthols and substituted phenols has been developed using alumina-sulfuric acid as a heterogeneous supported solid acid catalyst. This methodology shows excellent regioselectivity and affords the desired product in good to excellent yield. The heterogeneous catalyst can also be recycled efficiently without much loss of activity.
