Zobrazeno 1 - 10
of 251
pro vyhledávání: '"Kellogg, RM"'
Autor:
Mashraqui, SH, Ashraf, M, Hariharasubrahmanian, H, Kellogg, RM, Meetsma, A, Mashraqui, Sabir H.
Publikováno v:
Journal of Molecular Structure, 689(1-2), 107-113. ELSEVIER SCIENCE BV
Synthesis of a new class of cofacially oriented neutral donor-acceptor thienothiophene, namely 3-anisyl-4-pyridyl thieno[2,3-b]thiophenes 7 and its ionic analog 8 has been described to probe the presence of through-space charge transfer interaction.
Autor:
Dalmolen, J, Tiemersma-Wegman, TD, van der Sluis, M, van Echten, E, Vries, TR, Kaptein, B, Broxterman, QB, Kellogg, RM, Nieuwenhuijzen, José W., Vries, Ton R., Broxterman, Quirinius B.
Publikováno v:
Chemistry, 11(19), 5619-5624. Wiley-VCH Verlag GmbH & Co. KGaA
The resolution of racemates through their diastereomeric salts can be positively affected by the addition of small amounts of suitable nucleation inhibitors. This discovery is a logical extension of "Dutch Resolution", in which equimolar amounts of r
Publikováno v:
Journal of the Chemical Society-Perkin Transactions 1, 2873-2877. ROYAL SOC CHEMISTRY
ISSUE=24;STARTPAGE=2873;ENDPAGE=2877;ISSN=0300-922X;TITLE=Journal of the Chemical Society-Perkin Transactions 1
ISSUE=24;STARTPAGE=2873;ENDPAGE=2877;ISSN=0300-922X;TITLE=Journal of the Chemical Society-Perkin Transactions 1
Stereospecific formation of aryl 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranoside was achieved by reaction of penta-O-aceeyl-beta-D-glucose 1 with substituted phenols in the presence of boron trifluoride. Yields of the purified products varied from 52-8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::0b9fe46676b1999def0ec6c3733d1991
https://research.rug.nl/en/publications/9fb6974d-8d26-4c88-a22c-1e52116702aa
https://research.rug.nl/en/publications/9fb6974d-8d26-4c88-a22c-1e52116702aa
Autor:
Hof, RP, Kellogg, RM
Publikováno v:
Journal of the Chemical Society-Perkin Transactions 1, 2051-2060. ROYAL SOC CHEMISTRY
ISSUE=16;STARTPAGE=2051;ENDPAGE=2060;ISSN=0300-922X;TITLE=Journal of the Chemical Society-Perkin Transactions 1
ISSUE=16;STARTPAGE=2051;ENDPAGE=2060;ISSN=0300-922X;TITLE=Journal of the Chemical Society-Perkin Transactions 1
Diols 1, which contain adjacent tertiary and primary hydroxy groups, can be selectively mono-acylated at the primary hydroxy group by many lipases in organic solvents, Since the reaction does not take place at the chiral tertiary centre itself, obser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::e73d972f503f25432fe17b759ba34b3d
https://research.rug.nl/en/publications/d234d63a-039f-49eb-bbd2-9b5da33f8e20
https://research.rug.nl/en/publications/d234d63a-039f-49eb-bbd2-9b5da33f8e20
Publikováno v:
Synthesis-Stuttgart, 1995(5), 533-538. GEORG THIEME VERLAG KG
Treatment of the 3-monomethanesulfonates of 1,2,2-trisubstituted 1,5-propanediols under phase-transfer conditions affords 2-aryl (or alkyl)-3,3-dialkyloxetanes. Twelve oxetanes have been obtained by this method; three of these oxetanes have been obta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86d75b883f5e8e843b526464662140fd
https://research.rug.nl/en/publications/c3aab044-a6e3-4e1e-8fb5-350d2ae5607d
https://research.rug.nl/en/publications/c3aab044-a6e3-4e1e-8fb5-350d2ae5607d
Publikováno v:
Inorganic Chemistry, 33(11), 2448-2452. AMER CHEMICAL SOC
Cyclization of 3-thiapentane-1,5-dithiol (4) as its cesium dithiolate with 1,3-dichloropropanone (1) gives in 72% yield the cyclic thioether 3,6,9-trithiadecanone (C7H12OS3, 5). Crystals are white. Crystal data for 5 at 130 K: monoclinic, space group
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::b454558236bc7d4eead5627bc4ecdbbb
https://research.rug.nl/en/publications/37180b73-f69c-45fc-9683-12f034a1fc2a
https://research.rug.nl/en/publications/37180b73-f69c-45fc-9683-12f034a1fc2a
Autor:
HOF, RP, KELLOGG, RM
Publikováno v:
Tetrahedron-Asymmetry, 5(4), 565-568. PERGAMON-ELSEVIER SCIENCE LTD
Several racemic 1,2-diols bearing a tertiary benzylic alcohol stereogenic center can be esterified regioselectively by vinyl acetate using lipases and esterases in organic media. With the correct choice of enzyme and if the non-phenyl substituent at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::7ee561efe2c84b8192536ab398c89684
https://research.rug.nl/en/publications/39248874-dec8-496d-9ae3-6e6f1a7f78f5
https://research.rug.nl/en/publications/39248874-dec8-496d-9ae3-6e6f1a7f78f5
Publikováno v:
Journal of the Chemical Society-Perkin Transactions 1, 707-715. ROYAL SOC CHEMISTRY
ISSUE=6;STARTPAGE=707;ENDPAGE=715;ISSN=0300-922X;TITLE=Journal of the Chemical Society-Perkin Transactions 1
ISSUE=6;STARTPAGE=707;ENDPAGE=715;ISSN=0300-922X;TITLE=Journal of the Chemical Society-Perkin Transactions 1
The acid-catalysed condensation of 2,2'-thiodiethanethiol 1 with carbonyl compounds (or equivalents thereof) can, under properly chosen conditions, lead in good yield to thiocrown ethers containing thioacetal units. The reaction with benzaldehyde 2 h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::ae36f92107d8f93da94021b3d48411c0
https://research.rug.nl/en/publications/ea268023-e131-4416-ac16-ba42a690a9a4
https://research.rug.nl/en/publications/ea268023-e131-4416-ac16-ba42a690a9a4
Publikováno v:
Journal of Organometallic Chemistry, 464(2), 127-131. Elsevier Science
Reaction of 2,6-lutidine with 2 equivalents of (n)BuLi followed by addition of 2-adamantanone affords the doubly functionalized 2,6-di-(2-oxy(2-adamantylidine))ethylpyridine (2a). Reaction of 2a with Me(2)SiCl(2) gives the pseudo-pentacoordinate 2,6-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::277f5a33902bce221feb7666718962be
https://research.rug.nl/en/publications/03e8c7d0-b972-4b7b-a651-6ecff7dd6ce3
https://research.rug.nl/en/publications/03e8c7d0-b972-4b7b-a651-6ecff7dd6ce3
Publikováno v:
Journal of Organic Chemistry, 58(21), 5624-5627. AMER CHEMICAL SOC INC
Cyclization of the bis cesium thiolate (generated in situ) of 1,3-dimercaptoacetone (1) with alpha,omega-dihalides in DMF affords the corresponding cyclic thioethers in good yields, providing an efficient alternative route to keto-functionalized thio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::fc29567c7c0dede119f684a2f60602af
https://research.rug.nl/en/publications/c26a9e57-b513-47b0-9c99-e649706a905b
https://research.rug.nl/en/publications/c26a9e57-b513-47b0-9c99-e649706a905b