198,306 research outputs found

    Facile access to silyl-functionalized N-heterocyclic olefins with HSiCl3

    No full text
    Ghadwal R, Reichmann SO, Engelhardt F, Andrada DM, Frenking G. Facile access to silyl-functionalized N-heterocyclic olefins with HSiCl3. Chemical Communications. 2013;49(82): 9440.N-heterocyclic olefins (NHOs), IPrCH2 (1) and SIPrCH2 (2) (IPrCH2 = {N(2,6-iPr2C6H3)CH}2CCH2 and SIPrCH2 = {N(2,6-iPr2C6H3)CH2}2CCH2), react with HSiCl3 and afford IPrCH(SiHCl2) (3) and SIPrCH(SiHCl2) (4), respectively. Compounds 3 and 4 have been isolated in almost quantitative yield. Interestingly, treatment of the silylene IPr·SiCl2 with 1 also affords 3, where silylene insertion into a C–H bond is observed. Computational analysis shows a high energy barrier for silylene insertion, therefore a protonation–deprotonation mechanism is more likely

    De Stellis Tam Usitatis; Quam Inusitatis, ac Cometis

    No full text
    Pro Loco In Amplissima Facultate Philosophica benevole impetrato, Ad D. III. Iunii A. C. M.DC.LIII. In Alma Witenbergensium Disputabit M. Jacobus Reichmann/ Kemberga-Saxo. S.W.C. Respondente. M. Martino Liepenio Gorza-Brandenb. Marchico ..

    De Sibyllis

    No full text
    In Alma Wittebergens. Publice disputabunt M. Jacobus Reichmann/ Sereniss. Elector: Saxon. Alumn. Collegii Philos. Adi. S.S.C. Et M. Paulus Philippus Röberus, Witteb: Saxo. Ad diem 2. Maii. In Auditorio Minor

    De Echo

    No full text
    In Academ. Witteberg. Ad D. XXXI. Octob. Disputabunt Praeses M. Jacobus Reichmann/ Collegii Philosoph. Adiunct. S.S.C. Et Respondens David Clinthius, Wismaria Mechlenburg. ...Vorlageform des Erscheinungsvermerks: Wittebergae Exscribebat Michael Wendt/ Anno MDCL

    High-dose therapy with ropinirole in patients with Parkinson's disease

    No full text
    Ropinirole is effective as mono- and combination therapy in PD. Previous studies have used a maximal dose of 24 mg/day; the present study assesses the effect of higher doses (up to 36 mg/day) on patients with motor fluctuations. Outcome measures were changes in the motor function score of the Unified Parkinson's Disease Rating Scale, the duration of dyskinesias and reductions in levodopa dose. 21/22 patients completed the study. The mean daily ropinirole dose at endpoint was 26.2 mg (SD, 4.43 mg, range 20-36 mg). Improvements in motor function (29%) and the duration of dyskinesias (45%) from baseline to endpoint were significant (p < 0.01 and p < 0.05, respectively). The mean levodopa dose fell by 32% during the study (from 599 mg to 409 mg; p = 0.007). Side effects were mild. High-dose ropinirole (20-36 mg/day) was well tolerated and conferred significant clinical benefit on patients with motor fluctuations

    Dr. Duane M. Jackson, Morehouse College, July 2011

    No full text
    This video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer

    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.

    No full text
    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states. By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement. To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
    corecore