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Showing 1 to 12 of 355 entries
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Evidence-based school counseling: Making a difference with data-driven practices

Stem career interventions

Dimmitt C, Hatch T.
GSID: fM6-fJtTK0AJ
C Dimmitt, JC Carey, T Hatch - 2007 - books.google.com

Today's school counselors are under enormous pressure to document their effectiveness by using data and producing quantitative accountability reports--whether or not they've had the …

Chiral propargylic cations as intermediates in SN1-type reactions: substitution pattern, nuclear magnetic resonance studies, and origin of the diastereoselectivity.

Journal of the American Chemical Society

Nitsch D, Huber SM, Pöthig A, Narayanan A, Olah GA, Prakash GK, Bach T.
PMID: 24494822
J Am Chem Soc. 2014 Feb 19;136(7):2851-7. doi: 10.1021/ja411772n. Epub 2014 Feb 04.

Nine propargylic acetates, bearing a stereogenic center (-C*HXR(2)) adjacent to the electrophilic carbon atom, were prepared and subjected to SN1-type substitution reactions with various silyl nucleophiles employing bismuth trifluoromethanesulfonate [Bi(OTf)3] as the Lewis acid. The diastereoselectivity of the reactions...

Regioselective oxidative Pd-catalysed coupling of alkylboronic acids with pyridin-2-yl-substituted heterocycles.

Chemical communications (Cambridge, England)

Wippich J, Schnapperelle I, Bach T.
PMID: 25605647
Chem Commun (Camb). 2015 Feb 21;51(15):3166-8. doi: 10.1039/c4cc10144h.

A total of 19 alkylated heterocycles (thiophenes, benzothiophenes, pyrroles, furans) were prepared (36-99% yield) from the respective pyridin-2-yl-substituted precursors employing alkylboronic acids as the C-H alkylating reagents in an oxidative (Ag2CO3 and 2,6-dimethyl-1,4-benzoquinone as oxidants) Pd-catalysed coupling reaction.

Imaging the position-dependent 3D force on microbeads subjected to acoustic radiation forces and streaming.

Lab on a chip

Lamprecht A, Lakämper S, Baasch T, Schaap IA, Dual J.
PMID: 27302661
Lab Chip. 2016 Jul 05;16(14):2682-93. doi: 10.1039/c6lc00546b.

Acoustic particle manipulation in microfluidic channels is becoming a powerful tool in microfluidics to control micrometer sized objects in medical, chemical and biological applications. By creating a standing acoustic wave in the channel, the resulting pressure field can be...

Photochemical Reaction Cascade from O-Pent-4-enyl-Substituted Salicylates to Complex Multifunctional Scaffolds.

The Journal of organic chemistry

Zech A, Bach T.
PMID: 29478316
J Org Chem. 2018 Mar 16;83(6):3069-3077. doi: 10.1021/acs.joc.8b00238. Epub 2018 Mar 06.

The arene ring of the title compounds is cleaved by a reaction cascade which is initiated by an intramolecular ortho photocycloaddition reaction. Tricyclic products were obtained in a highly regio- and diastereoselective fashion via a cyclooctatriene intermediate. The facial...

Modular synthesis of phenanthro[9,10-c]thiophenes by a sequence of C-H activation, suzuki cross-coupling and photocyclization reactions.

Chemistry (Weinheim an der Bergstrasse, Germany)

Schnapperelle I, Bach T.
PMID: 24981922
Chemistry. 2014 Jul 28;20(31):9725-32. doi: 10.1002/chem.201402765. Epub 2014 Jun 30.

A total number of 15 different 3,4-diarylthiophenes were synthesized, which bear a chlorine atom in ortho-position of one of the aryl substituents. One aryl group was introduced by an oxidative cross-coupling reaction, involving a CH activation at C4(3) of...

The reliability of selected techniques in clinical arthrometrics.

The Australian journal of physiotherapy

Matyas TA, Bach TM.
PMID: 25025982
Aust J Physiother. 1985;31(5):175-99. doi: 10.1016/S0004-9514(14)60633-4.

A number of studies which have examined reliability of spinal assessment procedures in manual therapy are reviewed. The tests examined were Passive Accessory Intervertebral Movements, Passive Physiological Intervertebral Movements, Straight Leg Raise and Forward Flexion. In general, tests of...

Highly enantioselective intra- and intermolecular [2 + 2] photocycloaddition reactions of 2-quinolones mediated by a chiral lactam host: host-guest interactions, product configuration, and the origin of the stereoselectivity in solution.

Journal of the American Chemical Society

Bach T, Bergmann H, Grosch B, Harms K.
PMID: 12095342
J Am Chem Soc. 2002 Jul 10;124(27):7982-90. doi: 10.1021/ja0122288.

The [2 + 2] photocycloaddition of 4-alkoxy-2-quinolones was conducted in the presence of the chiral lactams 5 or ent-5. At -60 degrees C in toluene as the solvent the intramolecular reaction of quinolones 6 and 8 as well as...

Enantioselective Intramolecular.

Angewandte Chemie (International ed. in English)

Bach T, Bergmann H, Harms K.
PMID: 10941071
Angew Chem Int Ed Engl. 2000 Jul 03;39(13):2302-2304.

No abstract available.

Highly enantioselective Diels-Alder reaction of a photochemically generated o-quinodimethane with olefins.

Angewandte Chemie (International ed. in English)

Grosch B, Orlebar CN, Herdtweck E, Massa W, Bach T.
PMID: 12916050
Angew Chem Int Ed Engl. 2003 Aug 11;42(31):3693-6. doi: 10.1002/anie.200351567.

No abstract available.

Intramolecular iron(II)-catalyzed nitrogen transfer reactions of unsaturated alkoxycarbonyl azides: a facile and stereoselective route to 4,5-disubstituted oxazolidinones.

Chemistry (Weinheim an der Bergstrasse, Germany)

Bach T, Schlummer B, Harms K.
PMID: 11465449
Chemistry. 2001 Jun 18;7(12):2581-94. doi: 10.1002/1521-3765(20010618)7:12<2581::aid-chem25810>3.0.co;2-o.

Intramolecular FeII-catalyzed reactions of various unsaturated alkoxycarbonyl azides are described. The reactions occur in the presence of stoichiometric amounts of trimethyl silyl chloride employing ethanol as the solvent. The corresponding 2-alkenyloxycarbonyl azides 5, 9, 18, 20, 22, and 24...

Enantioselective Norrish-Yang cyclization reactions of N-(omega-oxo-omega-phenylalkyl)-substituted imidazolidinones in solution and in the solid state.

Chemistry (Weinheim an der Bergstrasse, Germany)

Bach T, Aechtner T, Neumüller B.
PMID: 12180325
Chemistry. 2002 Jun 03;8(11):2464-75. doi: 10.1002/1521-3765(20020603)8:11<2464::AID-CHEM2464>3.0.CO;2-S.

The four N-(omega-oxo-omega-phenyl-alkyl)-substituted imidazolidinones 5-8 were prepared from N-acetylimidazolidinone (4). Upon irradiation, these substrates underwent Norrish-Yang cyclization to the racemic products rac-9-rac-12 (51-75%). The reactions of the N-2-oxoethylimidazolidinones 5 and 6 were conducted in tBuOH, and yielded 1:1 mixtures...

Showing 1 to 12 of 355 entries