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Showing 1 to 12 of 125 entries
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Gaps in Glaucoma care: A systematic review of monoscopic disc photos to screen for glaucoma.

Expert review of ophthalmology

Newman-Casey PA, Verkade AJ, Oren G, Robin AL.
PMID: 26097497
Expert Rev Ophthalmol. 2014 Dec;9(6):467-474. doi: 10.1586/17469899.2014.967218.

No abstract available.

Overall Quality of Life in Adult Biliary Atresia Survivors with or without Liver Transplantation: Results from a National Cohort.

European journal of pediatric surgery : official journal of Austrian Association of Pediatric Surgery ... [et al] = Zeitschrift fur Kinderchirurgie

de Vries W, Lind RC, Sze YK, van der Steeg AF, Sieders E, Porte RJ, Verkade HJ, Hulscher JB, Hoekstra-Weebers JE.
PMID: 26571492
Eur J Pediatr Surg. 2016 Aug;26(4):e1. doi: 10.1055/s-0035-1569066. Epub 2015 Nov 16.

No abstract available.

P(i-BuNCH2CH2)3N: an effective ligand in the palladium-catalyzed amination of aryl bromides and iodides.

The Journal of organic chemistry

Urgaonkar S, Nagarajan M, Verkade JG.
PMID: 12530871
J Org Chem. 2003 Jan 24;68(2):452-9. doi: 10.1021/jo0205309.

It is shown that the bicyclic triaminophosphine P(i-BuNCH2CH2)3N serves as an effective ligand for the palladium-catalyzed amination of a wide array of aryl bromides and iodides. Other bicyclic or acyclic triaminophosphines, even those of similar basicity and/or bulk, were...

Application of a new bicyclic triaminophosphine ligand in Pd-catalyzed Buchwald-Hartwig amination reactions of aryl chlorides, bromides, and iodides.

The Journal of organic chemistry

Urgaonkar S, Xu JH, Verkade JG.
PMID: 14575466
J Org Chem. 2003 Oct 31;68(22):8416-23. doi: 10.1021/jo034994y.

The new bicyclic triaminophosphine ligand P(i-BuNCH2)3CMe (3) has been synthesized in three steps from commercially available materials and its efficacy in palladium-catalyzed reactions of aryl halides with an array of amines has been demonstrated. Electron-poor, electron-neutral, and electron-rich aryl...

Highly active palladium catalysts supported by bulky proazaphosphatrane ligands for Stille cross-coupling: coupling of aryl and vinyl chlorides, room temperature coupling of aryl bromides, coupling of aryl triflates, and synthesis of sterically hindered biaryls.

Journal of the American Chemical Society

Su W, Urgaonkar S, McLaughlin PA, Verkade JG.
PMID: 15600345
J Am Chem Soc. 2004 Dec 22;126(50):16433-9. doi: 10.1021/ja0450096.

A family of proazaphosphatrane ligands [P(RNCH2CH2)2N(R'NCH2CH2): R = R' = i-Bu, 1; R = Bz, R' = i-Bu, 3; R = R' = Bz, 4] for palladium-catalyzed Stille reactions of aryl chlorides is described. Catalysts derived from ligands 1...

P(i-BuNCH2CH2)3N: an efficient ligand for the direct alpha-arylation of nitriles with aryl bromides.

The Journal of organic chemistry

You J, Verkade JG.
PMID: 14535776
J Org Chem. 2003 Oct 17;68(21):8003-7. doi: 10.1021/jo034779h.

A new catalyst system for the synthesis of alpha-aryl-substituted nitriles is reported. The bicyclic triaminophosphine P(i-BuNCH(2)CH(2))(3)N (1b) serves as an efficient and versatile ligand for the palladium-catalyzed direct alpha-arylation of nitriles with aryl bromides. Using ligand 1b, ethyl cyanoacetate...

(t-Bu)2PN=P(i-BuNCH2CH2)3N: new efficient ligand for palladium-catalyzed C-N couplings of aryl and heteroaryl bromides and chlorides and for vinyl bromides at room temperature.

The Journal of organic chemistry

Reddy ChV, Kingston JV, Verkade JG.
PMID: 18370424
J Org Chem. 2008 Apr 18;73(8):3047-62. doi: 10.1021/jo702367k. Epub 2008 Mar 28.

By employing Pd(OAc)2, Cs2CO3, or NaOH, and the new ligand (t-Bu)2PN=P(i-BuNCH2CH2)3N (3a), an electronically diverse array of aryl bromides and chlorides possessing base-sensitive substituents (nitro, ester, and keto) provide coupling products with bulky aryl amines in good to excellent...

A general method for the direct alpha-arylation of nitriles with aryl chlorides.

Angewandte Chemie (International ed. in English)

You J, Verkade JG.
PMID: 14595628
Angew Chem Int Ed Engl. 2003 Oct 27;42(41):5051-3. doi: 10.1002/anie.200351954.

No abstract available.

Merrifield Resin-C6H4CH2N3P(MeNCH2CH2)3N: an efficient reusable catalyst for room-temperature 1,4-addition reactions and a more convenient synthesis of its precursor P(MeNCH2CH2)3N.

The Journal of organic chemistry

Reddy CR, Verkade JG.
PMID: 17367193
J Org Chem. 2007 Apr 13;72(8):3093-6. doi: 10.1021/jo062505z. Epub 2007 Mar 17.

1,4-additions to a variety of Michael acceptors with a wide variety of donors were efficiently catalyzed at room temperature by the title reusable Merrifield resin-supported catalyst. Advantages of this catalyst include a simple workup (filtration of the reaction mixture)...

Facile synthesis of monomeric alumatranes.

Journal of the American Chemical Society

Su W, Kim Y, Ellern A, Guzei IA, Verkade JG.
PMID: 17044700
J Am Chem Soc. 2006 Oct 25;128(42):13727-35. doi: 10.1021/ja0626786.

Alumatranes, tricyclic neutral molecules featuring a transannular N --> Al bond, can act as Lewis acids that activate substrates in the axial coordination site. Treatment of tris(2-hydroxy-3,5-dimethylbenzyl)amine with AlMe(3) afforded dimeric (AlL)(2) 1 [wherein L = tris(2-oxy-3,5-dimethylbenzyl)amine]. X-ray diffraction...

Carrier-mediated and carrier-independent release of serotonin from isolated central nerve endings.

Neurochemistry international

Maura G, Gemignani A, Versace P, Martire M, Raiteri M.
PMID: 20487871
Neurochem Int. 1982;4(4):219-24. doi: 10.1016/0197-0186(82)90057-2.

The release of serotonin elicited by Ca(2+)-dependent stimuli (depolarization, ionophore A23187) from rat brain synaptosomes previously labelled with the radioactive indoleamine was not affected by the presence of the serotonin carrier blocker chlorimipramine. In contrast, other releasing stimuli, such...

Solarization for nematode disinfestation of small volumes of soil.

Journal of nematology

Giblin-Davis RM, Verkade SD.
PMID: 19290301
J Nematol. 1988 Oct;20:41-5.

Several polyethylene plastics were evaluated as potential materials for disinfesting small volumes of soil containing nematodes. Bursaphelenchus seani, cultured on the fungus Monilinia fructicola in petri dishes, was used to bioassay the survival and reproductive capability of nematodes buried...

Showing 1 to 12 of 125 entries