α-Oxoketene-S,S-, N,S- and N,N-acetals: Versatile intermediates in organic synthesis

Tetrahedron

Volumn 46, Issue 16, 1990, Pages 5423-5506

  Junjappa, H ^a   Ila, H ^a   Asokan, C V ^a  

^a NONE

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001453067     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4020(01)87748-6     Document Type: Article

References (315)

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42. Efficient pentannelation of cis- and trans-1-decalones
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44. METHYL 3-LITHIO-2-METHYL-3-PHENYLTHIO-2-PROPENOATE AS A ZWITTERIONIC THREE-CARBON ADDEND; REACTIONS WITH CARBONYL COMPOUNDS
45. A Facile Synthesis of 4-Phenylthio-2(5H )-furanone Derivatives. Synthesis of Sesquirose Furan and Bullate-none
46. A new simple synthesis of variously substituted furans and butenolides
47. Polarized Ketene Dithioacetals; 53:1A Facile Synthesis of 2-Aryl-6-methylthio-4H-pyran-4-ones and a Novel Cycloaromatization Reaction
48. A Facile Synthesis of Substituted 6-Amino-2-methylthio-4H-thiopyran-4-ones
49. Keten SS-acetals. Part 9. Reaction of ?-oxo- and ?-cyano-keten SS-acetals with cyanoacetamide: a new general method for substituted and fused 4-alkylthio-3-cyano-2(1H)-pyridones and formation of novel pyridones through base-induced rearrangements
50. Polarized ketene dithioacetals. Part 65. Studies on additions of 2-aroyl-3-cyano-1,1-bis(methylthio)propenide anions to hetero-multiple bonds
51. A Novel Route to Methyl 3-(3,4-Disubstituted 5-alkylthio/amino-2-thienyl) propenoates
52. REDUCTION OF β-ALKYLTHIO α,β-UNSATURATED KETONES [R1COCH=C(R2)SR3] WITH LiAlH4 OR NaBH4: CONVERSION TO α,β-UNSATURATED KETONES (R1CH=CHCOR2)
53. Reduction of ?-arylthio- or ?-alkylthio-??-unsaturated ketones
54. Partial Reductive Demethylthiolation ofa-KetoketeneS,S-Acetals with Sodium Borohydride/Nickel Chloride: A New, General Method for 2-Methylthio-1-alkenyl Ketones
55. A Novel, General Method for the Synthesis of 2-Methyl-Substituted and 2-Unsubstituted Methyl 5-Aryl-2,4-pentadienoates
56. A Facile and Convenient Synthesis of Methyl 7-Aryl-2,4,6-heptatrienoates
57. The Nazarov Cyclisation
58. Polarized Ketene Dithioacetals; 71.1Synthesis of 2,5-Substituted 3-Bis(methylthio)methylenetetrahydrofurans
59. Katodische Reduktion von Keten-S,S-acetalen
60. Total synthesis of (�)-myodesmone employing a regiospecifically substituted ?-oxoketene dithioacetal
61. Polarized ketene dithioacetals. Part 42. Studies on the reactions of alkyl and aryl Grignard reagents with ?-oxoketene dithioacetals
62. Reformatsky Reaction on α-OxoketeneS,S-Acetals: Synthesis of Novel Polarized VinylketeneS,S-Acetals and Dimethyl 2-Aryl(methyl)-propene-1,3-dicarboxylates
63. A versatile synthesis of .alpha.-pyrones
64. Reactions of α-Oxoketenedithioacetals with Phenylmagnesium Bromide: Synthesis of Novel 1-Phenyl-1-methylthio-3-phenyl (or 2,3-Fused)-indenes and 2,3-Fused Heterocyclic-1,3-Diphenyl-2-alken-1-ones
65. A Novel Route to StilbenesviaCationic Cycloaromatization
66. A new approach for the regiospecific annelation of butenolides
67. Substitution ofS-Methyl Groups by Grignard Reagents
68. Conjugate Addition of Lithium Dimethylcuprate to an alpha,beta,beta,-Trialkylthio-alpha,beta-unsaturated Ketone.
69. Natürlich vorkommende Terpen-Derivate, 355. Synthese von drei ausIsocoma wrightii isolierten Eudesman-Derivaten
70. Natürlich vorkommende Terpen-Derivate, 3831) Synthese des Isopetasols
71. Stereoselective total synthesis of (4S)-trans-.BETA.-elemenone from (S)-2-cyclohexen-1-ol.
72. A New Synthesis of dl-Allomatridine
73. Studies of Quinolizine Derivatives. V. Synthesis of 3-Cyano-2-methylthio-4-oxo-6, 7-dihydrobenzo [α] quinolizines and Their Reactions
74. Synthesis and reaction of 6-substituted 3-methoxycarbonyl-4-methylthio-2H-pyran-2-one derivatives
75. Synthesis of 6-(2-Phenylethenyl)-2H-pyran-2-one
76. Syntheses of 2-Pyrone Derivatives
77. Reaktionen von 2-Benzoyl-3,3-bis[methylthio]-acrylnitril mitCH-aciden Verbindungen
78. Reaktionen des 2-Benzoyl-3,3-bis(methylthio)acrylnitrils mit β-Dicarbonylverbindungen
79. 4-Diethylamino-2,6-di-tert-butylpyridine
80. A New Synthesis of Substituted 1-Methylthiabenzene 1-Oxides
81. Synthesis of thiabenzene oxides and azathiabenzene oxides
82. Ketenderivate, III. Pyrazole und Isoxazole aus Ketenmercaptalen
83. A Novel One Step Synthesis of 5(3)-Methylthio-, Alkoxy-, Amino- and Hydroxypyrazoles using α-Ketoketene-S,S-Diacetals
84. Reaction of 2-Alkylthiomethyl-3-alkylthioacrylophenones with Hydrazine, Guanidine, and Amines: Synthesis of Novel Pyrazoles, Pyrimidines, and Enaminoketones
85. Acylketen-S,S- und Acylketen-S,N-acetale als Bausteine f�r Heterocyclen: Pyrazole und Isoxazole
86. Acylketen-S,S- und Acylketen-S,N-acetale als Bausteine f�r Heterocyclen: 5-Cyanopyrimidine
87. Ketenderivate, II. Reaktionen substituierter Ketenmercaptale
88. A Facile Synthesis of 2-Amino-4-alkoxy-6-styryl- and 2-Amino-4-alkoxy-6-(4-aryl-1,3-butadienyl)-pyrimidines by Direct Cyclocondensation
89. A novel method for the synthesis of substituted and fused 3-cyano-4-methylmercapto-2(1H)-pyridones using ?-oxoketen S,S-diacetals
90. Keten SS-acetals. Part 9. Reaction of ?-oxo- and ?-cyano-keten SS-acetals with cyanoacetamide: a new general method for substituted and fused 4-alkylthio-3-cyano-2(1H)-pyridones and formation of novel pyridones through base-induced rearrangements
91. Keten SS-acetals. Part 10. Reaction of ?-oxoketen SS-acetals with N-alkylcyanoacetamides: a new general method for substituted and fused 2,7-dialkyl-8-amino-5-cyano-2,7-naphthyridine-1,6(2H,7H)-diones
92. Keten dithioacetals. Part 11. Reaction of 3-cyano-4-methylthio-2(1H)-pyridones with hydrazine and guanidine: synthesis of novel substituted and fused pyrazolo[4,3-c]pyridone and pyrido[4,3-d]pyrimidine derivatives
93. Reaktionen von 2-Benzoyl-3,3-bis[methylthio]-acrylnitril mitCH-aciden Verbindungen
94. Reaktionen von Acylketen-S,S-acetalen mit Aminen
95. Synthesis of Novel 2-Amino-4-aryl-5-arylthio-6-methoxypyrimidines and 3(5)-Aryl-4-arylthio-5(3)-methylthiopyrazolesviaα-Oxo-α-arylthioketene dithioacetals
96. Bromination of α-AroylketeneS,S-Acetals: Synthesis of Novel α-Aroyl-α-bromoketeneS,S-Acetals and Their Further Synthetic Transformations
97. Polarised ketene dithioacetals. Part 50. Reactions of ?-aroyl-?-bromoketene dithioacetals with hydrazine hydrate: formation of rearranged pyrazoles
98. Polarized Ketene Dithioacetals; 60.1Synthesis of Novel 6-Aryl- 5-bis(methylthio)methyl-3(2H)-pyridazinones
99. Über Keten-Derivate, V1) Oxalyl-ketenmercaptale und verwandte Verbindungen
100. Über Keten-Derivate, VI1) Oxalylketen-mercaptal-acetal und seine Umsetzungen
101. Regioselective Synthesis of 5-Alkylthio- and 3-Alkylthioisoxazoles from Acylketene Dithioacetals
102. Synthesis of 1,5-Benzodiazepines
103. Synthesis of Methyl 5-Aryl-3-oxo-4-pentenoates and Novel Substituted Cyclopentenones
104. Polarized Ketene Dithioacetals; 55:1Synthesis of Novel 5-Aryl-2-methylthio-4H-pyran-4-ones from Cinnamoylketene Dithioacetals
105. Keten dithioacetals. Part 22. Reaction of polarised ketoketen dithioacetals with dimethyl acetylenedicarboxylate
106. 6-Alkylthio-1,3-thiazinium-salze aus Acylketen-S,S-acetalen und Thioamiden
107. 11H,12H-[1]Benzopyrano[2,3-b]benzopyran-11,12-dione1
108. Cycloaddition of Sodium Azide to Polarized KeteneS,S- andS,N-Acetals: Synthesis of Novel Substituted Triazole and Tetrazole Derivatives
109. A Novel and Convenient Synthesis of 2-Amino-4-(N-alkyl-N-arylamino)-pyrimidines using Polarized KeteneS,S- andS,N-Acetals
110. Synthese offenkettiger und cyclischer Ketenheteroacetale aus ungesättigten β-Ketonitrilen
111. Synthese von Nitroheterocyclen
112. Reactions of Acyl(Sulfonyl)cyanoketeneS,S-Acetals withS,S-Dimethylsulfoximide: A Facile Synthesis of 2-Azathiabenzene 1-Oxides
113. 2-Arylthio- bzw. 2-Alkylthio-2-chlorovinyl-ketone aus Acylketen-dichloriden und Mercaptanen
114. A Convenient Synthesis of HeterocyclicN-Substituted Sulfoximides
115. Reaction ofa-KetoketeneS,N-Acetals with Cyanoacetamide: A New General Method for Substituted and Fused 4-(N-Alkylamino-,N-Arylamino-, orN-Morpholino)-3-cyano-2(1H)-pyridones
116. Reaction of α-KetoketeneS,N-Acetals with Hydroxylamine: A Facile General Route to 5-Aryl-3-(N-arylamino,N-alkylamino, orN-azacycloalkyl)-isoxazoles
117. Reactions of Polarized KeteneS,N- andN,N-Acetals with Benzoyl Isothiocyanate: Synthesis of Novel 1-N-Aryl(alkyl)-2-phenyl-5- aroyl-6-methylthio(N-alkylamino)-4-thioxopyrimidines
118. Reaction of Polarised α-KetoketeneN,N-Acetals with Dimethyl Acetylenedicarboxylate: Synthesis of Novel 5-Aroyl-1-aryl-6-arylamino-4-methoxycarbonyl-2-oxo-1,2-dihydropyridines
119. Polarized KeteneN,N- andS,N-Acetals as Novel Enamine Components for the Nenitzescu Indole Synthesis
120. Cyclocondensation of AcylketeneS,N- andN,N-acetals with Maleic Anhydride and Maleimide: A Facile One-Step Synthesis of Pyrano [3,4-c]pyrrole, Pyrrolo [3,4-c]pyridine and Condensed Pyrrole Derivatives
121. Reaction of AcylketeneS,N-Acetals with Malonyl Chloride: Synthesis of Novel 1,5-Substituted 4-Hydroxy-6-methylthio-2 (1H)-pyridones and 6,8-Substituted 4-Hydroxy-7-methylthio-2,5-dioxo-5,6-dihydro-2H-pyrano [3,2-c] pyridines
122. General method for the synthesis of 2-methylthio-3-substituted pyrroles using keten dithioacetals
123. Reaction of Polarized KeteneS,N-Acetals with Bromoacetaldehyde Diethyl Acetal: Synthesis of 1-Substituted 3-Acyl- and 3-Nitro-2-methylthiopyrroles and 1,2-Annulated 3-Acylpyrroles
124. Rearrangement Studies onS-Propargyl-N-azacycloalkyl Acetals: Synthesis of Novel 3-Aroyl-2-(N-azacycloalkyl)-4-methylthiophenes
125. A Facile, One-Step Synthesis of 3-Alkyl- or 3-Aryl-4-methyl-2-(substituted-methylene)-2,3-dihydro-1,3-thiazoles
126. Reactions of Polarized KetoketeneS,N-Acetals with Thionyl Chloride: a Novel General Route to 1-Aroyl-(or -Acyl)-2-aryl-(or -ethoxycarbonyl)-4-alkylthiothiazoles by Direct Heterocyclization
127. Synthesis of novel functionalized hydroxyiminoimines by direct nitrosation of ?-thio-?-amino-?,?- unsaturated ketones and their further transformations: new general syntheses for imidazole, quinoxaline, and thiazole derivatives
128. A Facile General Route to 2,2-Disubstituted 5-Alkylthio-4-aroyl-2H-imidazoles
129. Polarized ketene S,S- and S,N-acetals. Part 52. Lead tetra-acetate oxidation of 3-anilino-3-methylthio-2-arylacrylonitriles. A novel approach to substituted indoles
130. Reaction of keten dithio-acetals with aziridine. Iodide ion-catalysed rearrangement of thio-aziridino-methylene compounds to novel ?1-2-methylthio-3,3-disubstituted pyrrolines
131. Cycloaddition of Aroyl/AcylketeneS,N-Acetals with Tosyl Azide: Synthesis of Novel 4-Aroyl/Acyl-5-amino-1H-1,2,3-triazoles and 3,4-Annulated 1,2,3-Triazoles
132. Synthesis of pyrimidine derivatives by the reaction of ketene dithioacetals with amides
133. Reaction of Ketenethioacetals with Carboxamides
134. A general, high yield synthesis of ?-oxoketene dithioacetals and O-(1-alkoxy-2,2-dialkyl)vinyl S-alkyl dithiocarbonates from carboxylic esters