메뉴 건너뛰기
소속 기관 / 학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
고객센터 ENG
주제분류

논문 기본 정보

저자정보
출처
Royal Society of Chemistry (RSC) RSC Advances 15(58)
오류 신고하기
표지

검색

    초록·키워드

    We report an efficient approach for the synthesis of medicinally important dihydropyrano[2,3-<i>c</i>]pyrazoles derivatives by using Fe<sub>3</sub>O<sub>4</sub>@BTC nanocomposite (NCs) based catalytic system. The Fe<sub>3</sub>O<sub>4</sub>@BTC NCs were successfully synthesised <i>via</i>. immobilizing benzene-1,3,5-tricarboxylic acid (BTC) on Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles (MNPs). The synthesised NCs were characterized using X-ray diffraction (XRD) which disclose the formation of a crystalline structure of Fe<sub>3</sub>O<sub>4</sub>@BTC NCs, Fourier transform infrared (FTIR) spectroscopy suggests the presence of Fe-O band at 576 cm<sup>-1</sup> in addition to -C[double bond, length as m-dash]O, -O-H stretching frequencies are also observed, field emission scanning electron microscopy (FE-SEM) represents the spherical shape of Fe<sub>3</sub>O<sub>4</sub>@BTC NCs, high resolution-transmission electron microscopy (HR-TEM) revealed the particle size tobe ∼10.335 nm, energy dispersive analysis of X-ray (EDAX) shows the presence of Fe, C and O elements, Brunauer-Emmett-Teller (BET) surface area reveals its specific surface area 84.87 m<sup>2</sup> g<sup>-1</sup> and thermogravimetric analysis (TGA) shows its exceptional higher thermal stability. Furthermore, all dihydropyrano[2,3-<i>c</i>]pyrazoles derivatives were synthesised with high yield (79-92%), in shorter time (4-12 min). Recyclability of NCs was also investigated and it was found that the NCs can be reused over five cycles without any significant loss in its activity. Significantly, this protocol has prominent benefits such as high yields of product, shorter reaction time, facile workup, recyclable, use of ultrasound as clean energy source and absence of toxic solvents.

    본문·목차

    최근 본 자료 전체보기