Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Rumum Rohman"'
Autor:
In-Chul Hwang, Rumum Rohman, Pulakesh Aich, Younghoon Kim, Kyung Lock Kim, Kimoon Kim, Joon Ho Roh, Soonsang Hong, Bahiru Punja Benke, Eun Hui Lee
Publikováno v:
Journal of the American Chemical Society. 139:7432-7435
We report here a synthetic ion channel developed from a shape-persistent porphyrin-based covalent organic cage. The cage was synthesized by employing a synthetically economical dynamic covalent chemistry (DCC) approach. The organic cage selectively t
Autor:
Wooseup Hwang, Martin Moskovits, So Young Lee, Hyun Woo Kim, Ji Won Ha, Jungho Mun, Gyeongwon Yun, Rumum Rohman, James Brooke Murray, Kangkyun Baek, Junsuk Rho, Nam Hoon Kim, Jeehong Kim, Kimoon Kim
Publikováno v:
Journal of the American Chemical Society. 140(13)
Single-molecule surface-enhanced Raman spectroscopy (SERS) offers new opportunities for exploring the complex chemical and biological processes that cannot be easily probed using ensemble techniques. However, the ability to place the single molecule
Autor:
Young Ho Ko, Md. Rumum Rohman, Youngkook Kim, Yonghwi Kim, Jiangtao Jia, Dohyun Moon, Soonsang Hong, Kimoon Kim, Eunsung Lee
Publikováno v:
Angewandte Chemie. 127:13439-13442
The porphyrin boxes (PB-1 and PB-2), which are rationally designed porous organic cages with a large cavity using well-defined and rigid 3-connected triangular and 4-connected square shaped building units are reported. PB-1 has a cavity as large as 1
Autor:
Mohammad Hedayetullah Mir, Abu T. Khan, Rajibul A. Laskar, Md. Rumum Rohman, Naznin Ara Begum
Publikováno v:
Tetrahedron Letters. 54:5839-5844
Various aromatic aldehydes on reaction with 2-mercaptoethanol provided an unanticipated product, bis(2-hydroxyethyl)dithioacetals (3) as the major product along with the expected product 1,3-oxathiolanes (4) in the presence of 0.05 equiv amount of ni
Autor:
Hormi Mecadon, Iadeishisha Kharbangar, Icydora Kharkongor, Mantu Rajbangshi, Baskhemlang Kshiar, Badaker M. Laloo, Md. Rumum Rohman, Bekington Myrboh
Publikováno v:
Organic Preparations and Procedures International. 45:253-303
Over the years, derivatives of pyran and its fused analogs have been and continue to be a subject of considerable importance due to their wide spectrum of biological applications. The pyran ring co...
Publikováno v:
Tetrahedron Letters. 53:5261-5264
The γ-alumina catalyzed synthesis of a new series of β-functionalized 5-methyl-1 H -pyrazol-3-ol derivatives by the multi-component reaction of an aldehyde, ethylcyano acetate, and in situ generated 3-methyl-1 H -pyrazol-5(4 H )-one obtained from h
Publikováno v:
Tetrahedron Letters. 53:2837-2841
A modified one-pot method for the synthesis of unsymmetrical and heteroaryl benzils from substituted acetophenones and unactivated or weakly activated arenes by the use of H 2 SeO 3 and p -TsOH·H 2 O as catalysts at 35 °C is established. The presen
Autor:
Iadeishisha Kharbangar, Mantu Rajbangshi, Bekington Myrboh, Hormi Mecadon, Rishanlang Nongkhlaw, Md. Rumum Rohman, Badaker M. Laloo, Icydora Kharkongor
Publikováno v:
The Journal of Organic Chemistry. 77:707-712
An efficient regioselective protocol for the C-C bond formation by the unexpected α,α-diarylation of aromatic ketones with unactivated arenes in the presence of selenium dioxide and boron trifluoride etherate has been developed. The generality and
Autor:
Hormi Mecadon, Bekington Myrboh, Mantu Rajbangshi, Md. Rumum Rohman, Icydora Kharkongor, Badaker M. Laloo, Iadeishisha Kharbangar, Priti Rani Sahu
Publikováno v:
European Journal of Organic Chemistry. 2012:320-328
The oxidative coupling of the α-carbon atom of aromatic ketones with unactivated arenes in the presence of selenium dioxide and p-toluenesulfonic acid monohydrate is described. A number of unsymmetrical benzils have been prepared in good yields (38
Autor:
Mantu Rajbangshi, Iadeishisha Kharbangar, Hormi Mecadon, Badaker M. Laloo, Md. Rumum Rohman, Bekington Myrboh, Icydora Kharkongor
Publikováno v:
Tetrahedron Letters. 52:3228-3231
An efficient four-component synthesis of 6-amino-4-alkyl/aryl-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles involving ethyl acetoacetate, hydrazine hydrate, malononitrile, and various aldehydes using l -proline (10 mol %) in water under m