Novel multi-responsive P2VP-block-PNIPAAm block copolymers via nitroxide-mediated radical polymerization

• Cathrin Corten,
• Katja Kretschmer and
• Dirk Kuckling

Beilstein J. Org. Chem. 2010, 6, 756–765, doi:10.3762/bjoc.6.89

• freshly distilled before use. Dimethylformamide (DMF) was distilled over calcium hydride. All other chemicals were used as received. Characterization NMR spectra were recorded on a Bruker NMR spectrometer DRX500. Elemental analysis was done with a Hekatech EA 3000 Euro Vector CHNSO Elementaranalysator

Calix[4]arene-click-cyclodextrin and supramolecular structures with watersoluble NIPAAM-copolymers bearing adamantyl units: “Rings on ring on chain”

• Bernd Garska,
• Monir Tabatabai and
• Helmut Ritter

Beilstein J. Org. Chem. 2010, 6, 784–788, doi:10.3762/bjoc.6.83

• AppliChem (Germany). N,N-Dimethylformamide (DMF) and sodium hydroxide (NaOH) were purchased from VWR (USA). Dimethylsulfoxide-d6 99.9% atom% D was obtained from Deutero GmbH (Germany). Commercially available reagents and solvents were used without further purification. calix[4]arene 1 [19], calix[4]arene

Versatile supramolecular reactivity of zinc-tetra(4-pyridyl)porphyrin in crystalline solids: Polymeric grids with zinc dichloride and hydrogen-bonded networks with mellitic acid

• Sophia Lipstman and
• Israel Goldberg

Beilstein J. Org. Chem. 2009, 5, No. 77, doi:10.3762/bjoc.5.77

• , ethanol, and N,N-dimethylformamide (DMF). The resulting solution was refluxed for 16 h, and then cooled to room temperature and left for crystallization. X-ray quality crystals were obtained after four days. It appeared in both cases that ZnCl2 was formed in situ under the acidic conditions by extracting

The efficient synthesis of dibenzo[d,d′]benzo[1,2-b:4,3-b′]dithiophene and cyclopenta[1,2-b:4,3-b′]bis(benzo[d]thiophen)-6-one

• Zhihua Wang,
• Sheng Zhu,
• Jianwu Shi and
• Hua Wang

Beilstein J. Org. Chem. 2009, 5, No. 55, doi:10.3762/bjoc.5.55

• starting material, formylation and McMurry reaction were employed for preparing 1. The formylation step involves sequential deprotonation of 3 and treatment of the intermediate dilithiated species with N,N-dimethylformamide (DMF). Attempted generation of dilithiated 3 with either lithium diisopropylamide

A practical synthesis of the ¹³C/¹⁵N- labelled tripeptide N-formyl- Met-Leu-Phe, useful as a reference in solid- state NMR spectroscopy

• Sven T. Breitung,
• Jakob J. Lopez,
• Gerd Dürner,
• Clemens Glaubitz,
• Michael W. Göbel and
• Marcel Suhartono

Beilstein J. Org. Chem. 2008, 4, No. 35, doi:10.3762/bjoc.4.35

• .) Coupling of further building blocks: In case of quantitative conversion, the resin was washed with N,N-dimethylformamide (DMF, 5 ×) and treated three times (15 min, 10 min, 5 min) with a piperidine solution (25% in DMF). Then the resin was washed with N-methylpyrrolidone (NMP, 5 ×) and a solution of 13C

Ru-catalyzed dehydrogenative coupling of carboxylic acids and silanes - a new method for the preparation of silyl ester

• Guo-Bin Liu and
• Hong-Yun Zhao

Beilstein J. Org. Chem. 2008, 4, No. 27, doi:10.3762/bjoc.4.27

• detected (12–22%) (Table 2, Runs 2–8). In N,N-dimethylformamide (DMF) and N,N-dimethylacetamide (DMAc), the dehydrocoupling failed to reach completion being heated at 100 °C for 48 h, and significant amounts of Et3SiH were detected (Table 2, Runs 9 and 10). Other Ru complexes were also tested as catalysts

Colchitaxel, a coupled compound made from microtubule inhibitors colchicine and paclitaxel

• Karunananda Bombuwala,
• Thomas Kinstle,
• Vladimir Popik,
• Sonal O. Uppal,
• James B. Olesen,
• Jose Viña and
• Carol A. Heckman

Beilstein J. Org. Chem. 2006, 2, No. 13, doi:10.1186/1860-5397-2-13

• , DMAP, Et3N; b) MeONa at 0°C; c) TFA; d) glutaric anhydride, dimethylformamide (DMF) Reagents and conditions for protection of paclitaxel and coupling to N-glutaryl-deacetylcolchicine (6). The reagents used at each step are: a) TBDMSCl, DMAP; b) DCC, DMAP; c) TBAF. Comparison of the logP values