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Study on the reaction mechanism of the base-catalyzed intramolecular Diels-Alder reaction of furfuryl propargyl ethers
There is considerable current interest in the intramolecular Diels-Alder reaction, and it has been applied to a number of synthetic objectives with notable success.1 The vast majority of the workExpand
Intramolecular Diels-Alder reaction of furans with allenyl ethers followed by methylthio group 1,4-rearrangement
Abstract The base-catalyzed intramolecular Diels-Alder reactions of the furfuryl propargyl ethers 1a–1e gave compounds 6a–6e as the major product respectively, a novel reaction involving anExpand
Synthesis of New Type Diacetal Trioxa-Cage Compounds via an Intramolecular Nucleophilic Addition of the Hydroxy Group to the Carbonyl Oxide Group
The synthesis of diacetal trioxa-cage compounds with a new type of skeleton is reported. Ozonolysis of the diols 2a−f, 21, 24, and 33 in CH2Cl2 at −78 °C followed by reduction with Me2S gave theExpand
Intramolecular Diels-Alder reaction of furans with allenyl ethers followed by sulfur and silicon atom-containing group rearrangement
The intramolecular Diels−Alder reactions of a furandiene with an allenyl ether dienophile followed by the alkylthio, alkylsulfinyl, alkylsulfonyl, and trimethylsilyl group rearrangements areExpand
SYNTHESIS OF DIACETAL TRIOXA-CAGE COMPOUNDS VIA A SEQUENTIAL CYCLIZATION REACTION OF NORBORNENE DERIVATIVES INDUCED BY ELECTROPHILES
The synthesis of diacetal trioxa-cage compounds via a sequential cyclization reaction of norbornene derivatives induced by electrophiles in a short sequence is reported. Treatment of the norborneneExpand
INTRAMOLECULAR DIELS-ALDER REACTIONS OF FURANS WITH ALLENYL ETHERS - FORMATION OF INDANONE AND TETRALONE
The intramolecular Diels-Alder reactions of the furans 3, 11a and 11b produced indanone 6 and tetralones 14a and 14b respectively, presumably via the corresponding allenyl ethers 4, 12a and 12b andExpand
A tandem oxidation–intramolecular Diels–Alder reaction
Oxidation of the furan (4) with pyridinium chlorochromate gave the intramolecular Diels–Alder cycloadduct (6) as the major product, presumably via the intermediate (5).
NOVEL OXA-CAGE COMPOUNDS - SYNTHESIS, STRUCTURES, AND THE FORMATION MECHANISM OF TETRAACETAL OXA-CAGES AND CONVEX TETRAQUINANE OXA-CAGES
Several novel tetraacetal oxa-cage compounds Sa-d and convex tetraquinane oxa-cage compounds 16a-d and 1%-d are synthesized from alkylfurans in three steps. Ozonolysis of the cis-endo1,ri-diones 3a-dExpand
Iodine-induced cyclization reaction of endo-thioester substituted norbornenes followed by methylthio group rearrangement
Abstract Treatment of the endo -thioester group substituted norbornenes 3a-3d with iodine in aqueous tetrahydrofuran at 25 °C gave the novel methylthio group rearranged lactonization products 4a-4dExpand
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