Facile isomerization of oxiranes to allyl alcohols by mixed metal bases
1990
Résumé
The mixt. of LiN(CHMe2)2 and KOCMe3 (LIDAKOR reagent) promotes smooth ring opening of oxiranes to afford allyl alcs. with good to excellent yields. Internal epoxyalkanes and large-sized epoxycycloalkanes give preferentially or exclusively (E)-alkenols. The regio- and stereochem. of the ring-opening reaction are essentially the consequence of syn-periplanar elimination mechanisms. [on SciFinder (R)]
Détails
Titre
Facile isomerization of oxiranes to allyl alcohols by mixed metal bases
Auteur(s)
Mordini, Alessandro ; Ben Rayana, Ezzedine ; Margot, Christian ; Schlosser, Manfred
Publié dans
Tetrahedron
Volume
46
Numéro
7
Pages
2401-10
Date
1990
ISSN
0040-4020
Mots-clés (libres)
Isomerization; Ring cleavage (of epoxides with lithium diisopropylimide-potassium butoxide; allylic alcs. from); Stereochemistry (of ring opening of epoxides with lithium diisopropylimide-potassium butoxide); Regiochemistry (of ring opening of methyloxi; ring cleavage epoxide mixed base; allyl alc; isomerization alkyloxirane lithium isopropylamide potassium butoxide; oxirane opening base regiochem stereochem
Note
CAN 113:190776
24-1
Alicyclic Compounds
Inst. Chim. Org.,Univ. Lausanne,Lausanne,Switz.
Journal
written in English.
3123-80-6P ((Z)-3-Octen-5-ol); 5665-82-7P (2-Ethyl-1-penten-3-ol); 130001-56-8P Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. of, by ring opening of epoxide with base); 822-67-3P (2-Cyclohexen-1-ol); 2616-99-1P ((E)-3-Octen-5-ol); 3212-60-0P (2-Cyclopenten-1-ol); 4096-38-2P (2-Cyclohepten-1-ol); 4798-44-1P (1-Hexen-3-ol); 6221-49-4P ((E)-2-Cyclododecen-1-ol); 14390-23-9P (cis-2-Cyclooctene) Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. of, by ring opening of epoxide with lithium diisopropylimide-potassium butoxide); 865-47-4 (Potassium tert-butoxide) Role: RCT (Reactant), RACT (Reactant or reagent) (reagent contg. lithium diisopropylamide and, for stereoselective ring opening of epoxides, allylic alcs. from); 4111-54-0 Role: RCT (Reactant), RACT (Reactant or reagent) (reagent, for stereoselective ring opening of epoxides, allylic alcs. from); 1439-06-1; 1689-70-9 Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diiospropylimide-potassium butoxide, stereochem. of); 285-67-6 (Cyclopentene oxide); 286-20-4 (Cyclohexene oxide); 286-45-3 (Cycloheptene oxide); 4925-71-7 (cis-Cyclooctene oxide) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylamide-potassium butoxide, allylic alc. from); 1502-29-0 (cis-Cyclododecene oxide); 4683-60-7 (trans-Cyclododecene oxide) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylamide-potassium butoxide, allylic alc. from stereoselective); 6124-90-9 (cis-2-Methyl-3-propyloxirane); 6124-91-0 (trans-2-Methyl-3-propyloxirane) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylamide-potassium butoxide, regiochem. of); 130001-57-9 (trans-2,3-Diethyl-2-methyloxirane); 130001-58-0 (cis-2,3-Diethyl-2-methyloxirane) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylimide-potassium butoxide, regio- and stereochem. of)
24-1
Alicyclic Compounds
Inst. Chim. Org.,Univ. Lausanne,Lausanne,Switz.
Journal
written in English.
3123-80-6P ((Z)-3-Octen-5-ol); 5665-82-7P (2-Ethyl-1-penten-3-ol); 130001-56-8P Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. of, by ring opening of epoxide with base); 822-67-3P (2-Cyclohexen-1-ol); 2616-99-1P ((E)-3-Octen-5-ol); 3212-60-0P (2-Cyclopenten-1-ol); 4096-38-2P (2-Cyclohepten-1-ol); 4798-44-1P (1-Hexen-3-ol); 6221-49-4P ((E)-2-Cyclododecen-1-ol); 14390-23-9P (cis-2-Cyclooctene) Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. of, by ring opening of epoxide with lithium diisopropylimide-potassium butoxide); 865-47-4 (Potassium tert-butoxide) Role: RCT (Reactant), RACT (Reactant or reagent) (reagent contg. lithium diisopropylamide and, for stereoselective ring opening of epoxides, allylic alcs. from); 4111-54-0 Role: RCT (Reactant), RACT (Reactant or reagent) (reagent, for stereoselective ring opening of epoxides, allylic alcs. from); 1439-06-1; 1689-70-9 Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diiospropylimide-potassium butoxide, stereochem. of); 285-67-6 (Cyclopentene oxide); 286-20-4 (Cyclohexene oxide); 286-45-3 (Cycloheptene oxide); 4925-71-7 (cis-Cyclooctene oxide) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylamide-potassium butoxide, allylic alc. from); 1502-29-0 (cis-Cyclododecene oxide); 4683-60-7 (trans-Cyclododecene oxide) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylamide-potassium butoxide, allylic alc. from stereoselective); 6124-90-9 (cis-2-Methyl-3-propyloxirane); 6124-91-0 (trans-2-Methyl-3-propyloxirane) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylamide-potassium butoxide, regiochem. of); 130001-57-9 (trans-2,3-Diethyl-2-methyloxirane); 130001-58-0 (cis-2,3-Diethyl-2-methyloxirane) Role: RCT (Reactant), RACT (Reactant or reagent) (ring opening of, with lithium diisopropylimide-potassium butoxide, regio- and stereochem. of)
Laboratoires
LSCO
Le document apparaît dans
Production scientifique et compétences > SB - Faculté des sciences de base > SB Archives > LSCO - Laboratoire de synthèse organique et catalyse
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Date de création de la notice
2006-03-03