Zobrazeno 1 - 10
of 32
pro vyhledávání: '"R. Le Goaller"'
Publikováno v:
ChemInform. 28
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf492df3cae4a1e46f510d27e44a5433
https://doi.org/10.1002/chin.199737337
https://doi.org/10.1002/chin.199737337
Publikováno v:
Synthetic Communications. 16:63-68
Phenols are easily nitrated at room temperature, with good selectivity, by dilute nitric acid or metallic nitrates, in an acidic two-phase system, even without phase transfert catalyst. The results, in these experimental conditions, suggest an electr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75dcdb925307ddc8f7166b2fe042207c
https://doi.org/10.1080/00397918608057689
https://doi.org/10.1080/00397918608057689
Publikováno v:
Tetrahedron Letters. 19:3259-3262
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::736f78dfebea4428c3a5225b23c30096
https://doi.org/10.1016/s0040-4039(01)85609-4
https://doi.org/10.1016/s0040-4039(01)85609-4
Publikováno v:
Tetrahedron. 36:237-243
Metallation of a series of weak acids (phenols, alcohols, amines, and aryl methanes, pKa 7.2–33.4) by sodium and potassium hydride in presence of 2.2.1 (with NaH) et 2.2.2 (with KH) cryptands in tetrahydrofuran and benzene seems to involve activati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daafb113a53ce9a327d6056c4b777458
https://doi.org/10.1016/0040-4020(80)80011-1
https://doi.org/10.1016/0040-4020(80)80011-1
Publikováno v:
Tetrahedron. 35:1437-1440
The generation of the lithium, sodium and potassium enolates of cyclohexanone using LiH, NaH and KH has been investigated. The utilization of macrocyclic ligands (which selectively complex the metal cation) activated the alkaline hydride reagent. How
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::485b9b1f58a0999763e5e9fa4d14682e
https://doi.org/10.1016/0040-4020(79)85040-1
https://doi.org/10.1016/0040-4020(79)85040-1
Publikováno v:
Synthetic Communications. 12:1163-1169
Polyethylene oxides are shown to promote an efficient dihalocarbene formation from bromo — and chloroform and solid potassium hydroxide — Adducts with olefins are obtained in High yields.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::074e04aae1a6bd8f9c3162b19d2d118c
https://doi.org/10.1080/00397918208065984
https://doi.org/10.1080/00397918208065984
Publikováno v:
Tetrahedron. 36:1223-1226
Phenoxides, alkoxides and potassium amidates generated by KH in THF or benzene at room temperature are easily alkylated in the presence of catalytic quantities of [2.2.2]cryptand, without affecting addition-elimination ratios. Thus, Williamson and Ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb9be328279e0a25c92d4e04bfbd8752
https://doi.org/10.1016/0040-4020(80)87022-0
https://doi.org/10.1016/0040-4020(80)87022-0
Publikováno v:
Tetrahedron Letters. 23:1681-1684
Resume Acyclic polyethylene oxides exhibit useful catalytic effects in various organic reactions, and can be used in lieu of cryptands and crown ethers as nucleophile activators.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92248441e98e638be88c15e55d9f16fd
https://doi.org/10.1016/s0040-4039(00)87189-0
https://doi.org/10.1016/s0040-4039(00)87189-0
Publikováno v:
Chemischer Informationsdienst. 16
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::673a16552c494e0cb16aa018f5f6fa5b
https://doi.org/10.1002/chin.198517111
https://doi.org/10.1002/chin.198517111
Publikováno v:
Chemischer Informationsdienst. 12
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f33455aa1b2b7bc769b349127758fb4d
https://doi.org/10.1002/chin.198103100
https://doi.org/10.1002/chin.198103100