underwent this sulfonylation smoothly at room temperature under metal-free and chemical-oxidant-free conditions to afford indolyl arylsulfones in good to high yields. This reaction was found to tolerate a variety of functional groups, including halides and cyclopropyl, ether, ester, and aldehyde groups. It was applied to the synthesis of biologically active 5-HT6 modulators.
Iodine-Catalyzed Regioselective 2-Sulfonylation of Indoles with Sodium Sulfinates
作者:Fuhong Xiao、Hui Chen、Hao Xie、Shuqing Chen、Luo Yang、Guo-Jun Deng
DOI:10.1021/ol402987u
日期:2014.1.3
Iodine-catalyzed selective 2-arylsulfonyl indole formation from indoles and sodiumsulfinates is disclosed. Various substituted 2-arylsulfonyl indoles were obtained in one pot in the absence of metal catalyst at room temperature under air.
Convenient KI-catalyzed regioselective synthesis of 2-sulfonylindoles using water as solvent
作者:Hongjie Li、Xiaolong Wang、Jie Yan
DOI:10.1039/c7nj00474e
日期:——
A convenient procedure is developed for the preparation of 2-sulfonylindoles fromindoles and sodium sulfinates catalyzed by KI in water. This environmentally benign 2-sulfonylation of indoles proceeds efficiently under mild conditions, affording the products with high regioselectivity and in moderate to good yields.
Multifunctionalization of Indoles: Synthesis of 3‐Iodo‐2‐sulfonyl Indoles
作者:Hyowon Park、Junryeol Bae、Soobin Son、Hye‐Young Jang
DOI:10.1002/bkcs.11882
日期:2019.11
of indoles by using thiosulfonates, trimethyl sulfoxonium iodide (Me3SOI), and H2O2 was studied. The reaction of thiosulfonates with Me3SOI and H2O2 produced sulfonyl radicals and an iodination reagent, both of which were incorporated in indoles to form 3‐iodo‐2‐sulfonylindolesunder carefully controlled conditions. The related reaction mechanism and the substrate scope of 3‐iodo‐2‐sulfonyl indoles
研究了使用硫代磺酸盐,三甲基碘化碘甲烷(Me 3 SOI)和H 2 O 2对吲哚进行选择性多官能化的方法。硫代磺酸盐与Me 3 SOI和H 2 O 2的反应产生了磺酰基和碘化试剂,二者均在严格控制的条件下掺入吲哚中以形成3-碘-2-磺酰基吲哚。介绍了相关的反应机理和3-碘-2-磺酰基吲哚的底物范围。
Recognition and cleavage at the DNA major groove
申请人:——
公开号:US20030119022A1
公开(公告)日:2003-06-26
DNA recognition agents based on the indole-based aziridinyl eneimine and the cyclopent[b]indole methide species are described. The recognition process involved either selective alkylation or intercalating interactions in the major groove. DNA cleavage resulted from phosphate backbone alkylation (hydrolytic cleavage) and N(7)-alkylation (piperidine cleavage). The formation and fate of the eneimine was studied using enriched
13
C NMR spectra and x-ray crystallography. The aziridinyl eneimine specifically alkylates the N(7) position of DNA resulting in direction of the aziridinyl alkylating center to either the 3′- or 5′-phosphate of the alkylated base. The eneimine species forms dimers and trimers that appear to recognize DNA at up to three base pairs. The cyclopent[b]indole quinone methide recognizes the 3′-GT-5′ sequence and alkylates the guanine N(7) and the thymine 6-carbonyl oxygen causing the hydrolytic removal of these bases. New classes of DNA recognition agents have been developed and the utility of
13
C-enrichment and
13
C-NMR to study DNA alkylation reactions is disclosed.