در هنگام جستجو کلمه در قسمت عنوان میتوانید کلمات مورد جستجو را با کاراکتر (-) جدا کنید.
کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Catalysis
- نوع مقاله: Journal Article
- کلمات کلیدی: Ammonium chloride,MW irradiation,Tetrahydrobenzo[b]pyrans
- چکیده:
- چکیده انگلیسی: In the present work, we have developed a mild, efficient, and environmentally benign method for the synthesis of tetrahydrobenzo[b]pyran derivatives via a three-component cyclocondensation of aldehydes, malononitrile and dimedone utilizing ammonium chloride as a simple, easily available and cost effective catalyst under microwave irradiation. This method has several attracting features such as simple experimental set up, easy work-up procedure, high conversions and short reaction times affording the products in moderate to excellent yield.
- انتشار مقاله: 10-03-1394
- نویسندگان: Vijay Pagore,Sunil U. Tekale,Vivekanand B. Jadhav,Rajendra P. Pawar
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Tetrahydrobenzo[b]pyran,Microwave Irradiation,Ethyl methyl imidazolium hydroxide ionic liquid
- چکیده:
- چکیده انگلیسی: Ethyl methyl imidazolium hydroxide [EMIM][OH] ionic liquid catalyzed green protocol was developed for efficient and one-pot three-component condensation of various aromatic aldehydes, malononitrile, and dimedone under microwave irradiation for the synthesis of tetrahydrobenzo[b]pyran derivatives. The reaction proceeds in a short time period to afford moderate to excellent yield of products. The ionic liquid was recycled and reused for multiple time significantly, without a change in its catalytic efficiency.
- انتشار مقاله: 29-02-1398
- نویسندگان: Vijay P. Pagore,Vivekanand B. Jadhav,Priti N. Bajad,Rajendra P. Pawar
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Green synthesis,Homogeneous catalyst,Ru(II)/PEG-400,Biodegradable solvent
- چکیده:
- چکیده انگلیسی: A novel and green synthesis of 1-phenyl isoquinoline derivatives has been developed using [Ru(p-cymene)Cl2]2, as a homogeneous recyclable catalyst, with Cu(OAc)2 and AgSbF6 as oxidant and additive respectively, in PEG-400 biodegradable and green solvent via C-H/N-N functionalization of 1-(diphenylmethylene) hydrazine and aryl substituted acetylene. This protocol gives a simple extraction procedure, biodegradable and green solvent, high atom economy, reusable catalytic system and wide substrate scope with high yield of the product for the synthesis of isoquinoline derivatives.
- انتشار مقاله: 04-11-1397
- نویسندگان: Shrinivas L. Nakkalwar,Hanmant M. Kasralikar,Nitish S. Kaminwar,Shivaji B. Patwari,Vivekanand B. Jadhav
- مشاهده