ChemInform Abstract: An Efficient Synthesis of Propargylamines Using a Silica Gel Anchored Copper Chloride Catalyst in an Aqueous Medium.

Complexation copper with amine provides an effective strategy for fixation copper in wood, while hydrophobic modification improves the dimensional stability of wood. Thus, a combination of complexation and hydrophobization is expected to enhance the efficiency of copper-based biocides. In this study, hydrophobic hybrid silica gel containing copper amine complexes (MACu) was prepared through an in situ sol-gel process in wood using methyltriethoxysilane (MTES), 3-amino-propyltriethoxysilane (APTES), and copper chloride. The resistance to growth of molds for MACu modified wood (Populus tomentosa) was measured according to ASTM D3273-16. A leaching resistance test was carried out in accordance with AWPA E11-16. The results showed that only Aspergillus niger covered the surface of untreated wood blocks and no mold grew on the MACu surface even after the leaching test. MACu xerogel and MACu wood were further characterized by SEM-EDS, FTIR, and XPS. A possible schematic diagram of the reaction mechanism was proposed to explain the high-efficiency anti-mold performance of MACu wood.

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ChemInform Abstract: Silica Gel-Catalyzed Cyclizations of Enones and Double Michael Additions of Vinylogous Amides: Efficient Synthesis of Bicyclo(2.2.2)octanones and Bicyclohydrocarbazolones.

ChemInform ◽

10.1002/chin.199015144 ◽

1990 ◽

Vol 21 (15) ◽

Author(s):

D. SCHINZER ◽

M. KALESSE

Keyword(s):

Silica Gel ◽

Efficient Synthesis ◽

Michael Additions ◽

Vinylogous Amides

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Green approach: an efficient synthesis of 2,4-disubstituted-1,3-thiazoles and selenazoles in aqueous medium under ultrasonic irradiation

Research on Chemical Intermediates ◽

10.1007/s11164-014-1879-z ◽

2014 ◽

Vol 41 (11) ◽

pp. 8099-8109 ◽

Cited By ~ 4

Author(s):

Gondru Ramesh ◽

Banothu Janardhan ◽

Bavantula Rajitha

Keyword(s):

Aqueous Medium ◽

Ultrasonic Irradiation ◽

Efficient Synthesis ◽

Green Approach

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Diastereoselective Synthesis of Functionalised Trans-Tetrahydrobenzofuran-4-Ones in an Aqueous Medium by using DABCO as an Efficient Catalyst

Journal of Chemical Research ◽

10.3184/174751917x15094552081215 ◽

2017 ◽

Vol 41 (11) ◽

pp. 657-660 ◽

Cited By ~ 2

Author(s):

Mohammad Reza Salari ◽

Mohammad H. Mosslemin ◽

Alireza Hassanabadi

Keyword(s):

Aqueous Medium ◽

High Purity ◽

Reaction Times ◽

Diastereoselective Synthesis ◽

Efficient Synthesis ◽

One Pot ◽

Efficient Catalyst ◽

Pyridinium Bromide ◽

Work Up

A one-pot, efficient synthesis of 11 novel 2,3-diacylated trans-tetrahydrobenzofuran-4-one derivatives has been achieved via a three-component condensation of a N-(4-halophenacyl)-pyridinium bromide, a cyclic 1,3-diketone such as 5,5-dimethyl-1,3-cyclohexanedione (dimedone) or cyclohexane-1,3-dione and an arylglyoxal in the presence of catalytic amounts of 1,4-diaza-bicyclo[2.2.2]octane (DABCO) in water under reflux conditions. The attractive features of the method are excellent yields and high purity, short reaction times, easy work-up, and use of an inexpensive and non-toxic catalyst.

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An Efficient Synthesis ofN-Substituted-3-aryl-3-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)propanamides by Four-Component Reaction in Aqueous Medium

Journal of Heterocyclic Chemistry ◽

10.1002/jhet.1000 ◽

2013 ◽

Vol 50 (1) ◽

pp. 99-103 ◽

Cited By ~ 2

Author(s):

Guo-Lan Dou ◽

De-Ming Wang ◽

Xiao-Xing Zhong ◽

Da-Qing Shi

Keyword(s):

Aqueous Medium ◽

Efficient Synthesis

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Synthesis of Trans-6-(4-Chlorobenzoyl)-7-(Aryl)-1,3-Dimethyl-6,7-Dihydrofuro[3,2-d]Pyrimidine-2,4-Diones Using Choline Hydroxide as an Efficient Catalyst in an Aqueous Medium

Journal of Chemical Research ◽

10.3184/174751917x14859570937794 ◽

2017 ◽

Vol 41 (3) ◽

pp. 139-142 ◽

Cited By ~ 3

Author(s):

Maryam Salari ◽

Alireza Hassanabadi ◽

Mohammad H. Mosslemin

Keyword(s):

Aqueous Medium ◽

Aromatic Aldehyde ◽

Reaction Times ◽

Efficient Synthesis ◽

One Pot ◽

Efficient Catalyst ◽

Excellent Yield ◽

One Pot Condensation

A green and efficient synthesis of the trans-6-(4-chlorobenzoyl)-7-(aryl)-1,3-dimethyl-6,7-dihydrofuro[3,2-d]pyrimidine-2,4-diones has been achieved via a three-component, one-pot condensation of 2-[2-(4-chlorophenyl)-2-oxoethyl)]isoquinolinium bromide with 1,3-dimethylbarbituric acid and an aromatic aldehyde in the presence of catalytic amounts of choline hydroxide in water under reflux conditions. This gives trans-6-(4-chlorobenzoyl)-7-(aryl)-1,3-dimethyl-6,7-dihydrofuro[3,2-d]pyrimidine-2,4-diones in excellent yield and in short reaction times.

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