Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Lambertus Thijs"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 111:211-214
Aziridine-2-carboxylic esters 1 were converted into bicyclic boroxazolidones 3 in a three-step sequence. First, the ester groups were hydrolyzed either by sodium hydroxide or with lithium hydroxide in methanol. The salts thus obtained were acidified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d14bec8eecc3cc149364b5611c2a7b9
https://doi.org/10.1002/recl.19921110502
https://doi.org/10.1002/recl.19921110502
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 83:631-636
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4f6ccd7a642466a6734a11578768240
https://doi.org/10.1002/recl.19640830614
https://doi.org/10.1002/recl.19640830614
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 111:75-78
Aziridine-2-carboxylic esters 1 were converted into 2H-azirine-2-carboxylic esters 4 in two steps. Treatment of 1 with tert-butyl hypochlorite in ether gave smooth N-chlorination. Reaction of N-chloroaziridines 2 with 1,8-diazabicyclo[5.4.0]undec-7-e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6687d4f676519d436964415b30a8bd91
https://doi.org/10.1002/recl.19921110203
https://doi.org/10.1002/recl.19921110203
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 105:332-337
Optical antipodes of 4-alkyl-γ-lactones 3 have been prepared by photochemical rearrangement of optically active α,β-epoxy diazomethyl ketones 1 in ethanol to give 4-hydroxy-alkenoates 2, followed by reduction of the alkene bond and subsequent lact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fe849c0d945513cbbd00ed5340e7b4a
https://doi.org/10.1002/recl.19861050917
https://doi.org/10.1002/recl.19861050917
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 89:687-695
The preparation of the chlorosulfines RC(Cl)=S=O where R is C6H5 and C6H5S, by oxidation of the corresponding thioacyl chlorides, is described. Reaction of these chlorosulfines with thiophenol and potassium thiocyanate leads to substitution of the ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3741d524755b6872313c0539150870a1
https://doi.org/10.1002/recl.19700890704
https://doi.org/10.1002/recl.19700890704
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 111:16-21
Ring-opening reactions of 3-arylaziridine-2-carboxylic esters with various nucleophiles are described. Racemic methyl 3-(4-methoxyphenyl)-, 3-phenyl- and 3-(4-nitrophenyl)aziridine-2-carboxylate (1a, 1b and 1c, respectively) were selected as substrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::720395e1ebac393dfc4cb5acc597fb25
https://doi.org/10.1002/recl.19921110102
https://doi.org/10.1002/recl.19921110102
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 86:641-650
The addition of chlorine and bromine to 2-methoxynaphthalene-1-thial-S-oxide (II) yields the dichloride and dibromide (IVa and b). The dichloride gives upon treatment with triethylamine 2-methoxythionaphthoyl chloride-S-oxide (V). Similarly, thiobenz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::691abe41b8a5c56b4f87cab393c5760f
https://doi.org/10.1002/recl.19670860609
https://doi.org/10.1002/recl.19670860609
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 111:69-74
3-Aryl-3-azido-2-hydroxypropanoic esters, prepared from the corresponding 3-aryl-oxirane-2-carboxylic esters by ring opening with sodium azide, were reduced with tin(II) chloride dihydrate in methanol to give 3-amino-3-aryl-2-hydroxypropanoic esters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60e86dc96cf6ba67f754cd9d126fd3e4
https://doi.org/10.1002/recl.19921110202
https://doi.org/10.1002/recl.19921110202
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 111:1-15
Optically active oxirane-2-carboxylic esters, prepared from allylic alcohols employing the Sharpless epoxidation, were treated with sodium azide. The azido alcohols obtained were subsequently converted into aziridine-2-carboxylic esters by reaction w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48531a3f93e6e6b487dd2aee40798da9
https://doi.org/10.1002/recl.19921110101
https://doi.org/10.1002/recl.19921110101
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 111:59-68
Nucleophilic ring-opening reactions of 3-alkylaziridine-2-carboxylic esters are described. Without ring activation at nitrogen, ring opening could only be accomplished with ethereal hydrogen chloride. Introduction of electron-withdrawing activating g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::088fe14056ab409fd387e11a930c20c6
https://doi.org/10.1002/recl.19921110201
https://doi.org/10.1002/recl.19921110201