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Straightforward Preparation (straightforward + preparation)

Distribution by Scientific Domains

Chemistry	80%

Selected Abstracts

A Straightforward Preparation of Fluorine-Containing 1,2-Dihydropyrimidines and Pyrimidines with 2,2-Dihydropolyfluoroalkylaldehydes.

CHEMINFORM, Issue 40 2007
Xian-Jin Yang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Uncatalyzed Reaction of Silyl Ketene Acetals with Oxalyl Chloride: A Straightforward Preparation of Symmetrical Pulvinic Acids.

CHEMINFORM, Issue 29 2005
Benoit Heurtaux
No abstract is available for this article. [source]

ChemInform Abstract: Spirocyclopropanated Bicyclopropylidenes: Straightforward Preparation, Physical Properties, and Chemical Transformations.

CHEMINFORM, Issue 5 2002
Armin de Meijere
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

A New Synthesis of Push-Pull Pyrroles, Their Oxidation to Stable 3H -Pyrroles and an Unexpected Anellation Reaction

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 20 2009
Gunther Buehrdel
Abstract A new synthesis of push-pull pyrroles of type 5 was developed starting from bis(imidoyl chlorides) 1 and various iminodiacetic acid derivatives 3. The use of appropriate N -trifluoroacetyl residues as protecting/activating group proved to be the method of choice for the straightforward preparation of the 3,4-diarylamino-1H -pyrroles 5. When benzothiazole substructures are present in 2,5-position of heterocycles 5, a two-electron oxidation leads to 3H -pyrroles of type 6 in excellent yields. However, in the case of cyano or ester groups, a further oxidative process immediately led to the new 3H -pyrrolo[3,4- b]quinoxalines 7 via intramolecular ring anellation. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) [source]

Synthesis and Characterization of Helix-Coil Diblock Copolymers with Controlled Supramolecular Architectures in Aqueous Solution,

MACROMOLECULAR RAPID COMMUNICATIONS, Issue 15 2005
Jie Zhang
Abstract Summary: A series of helix-coil diblock copolymers based on poly(ethylene oxide) and optically active helical poly{(+)-2,5-bis[4,-((S)-2-methylbutoxy)phenyl]styrene} (PMBPS) were synthesized via atom transfer radical polymerization (ATRP). The synthetic methodology permitted straightforward preparation of the diblock copolymers with relatively low polydispersities and a broad range of compositions and molecular weights. Depending on the composing block length and the initial concentration, the copolymers self-assembled into different supramolecular structures in aqueous solution, including spherical micelles, vesicles, multilamellar vesicles, large compound vesicles, and tubules. Schematic representation of the synthesis of PEO- b -PMBPS block copolymers and their aggregation in aqueous solution. [source]