Hengyuan Lang : rechercher sur Z-Library

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1

Novel and Facile Syntheses of Alkenyl, Alkynyl, and Aryl 1,2-Diketones

Katritzky, Alan R., Wang, Zuoquan, Lang, Hengyuan, Feng, Daming

Journal:

Journal of Organic Chemistry

Année:

1997

Langue:

english

Fichier:

PDF, 230 KB

english, 1997

2

Benzotriazole- and 1,2,4-Triazole-Stabilized Allylic Anions: Applications in Syntheses of Functionalized α,β-Unsaturated Ketones, γ-Lactones, γ-Lactams, and β-Substituted Esters

Katritzky, Alan R., Feng, Daming, Lang, Hengyuan

Journal:

Journal of Organic Chemistry

Année:

1997

Langue:

english

Fichier:

PDF, 418 KB

english, 1997

3

ChemInform Abstract: Novel Syntheses of 4-Alkyl-2(5H)-thiophenones and 8-Phenylimino-1,2,4-triazolo[5,1-c]-1,4-thiazines.

Alan R. Katritzky, Daming Feng, Hengyuan Lang, Ming Qi, Peter J. Steel

Journal:

Année:

1999

Fichier:

PDF, 29 KB

1999

4

ChemInform Abstract: Regioselectivity of the Reactions of Heteroatom-Stabilized Allyl Anions with Electrophiles

Alan R. Katritzky, Michaela Piffl, Hengyuan Lang, Ernst Anders

Journal:

Année:

1999

Fichier:

PDF, 25 KB

1999

5

2-Mono- and 2,5-bis[bis[(4-dimethylamino)phenyl]hydroxymethyl]-substituted furans, thiophenes and N-methylpyrroles: New color-formers for carbonless imaging

Alan R. Katritzky, Zhongxing Zhang, Hengyuan Lang, Nusrallah Jubran, Louis M. Leichter, Norman Sweeny

Journal:

Journal of Heterocyclic Chemistry

Année:

1997

Fichier:

PDF, 422 KB

1997

6

Benzotriazole stabilized lithium intermediates as a route to the elaboration of N-substituents in amides

Alan R. Katritzky, Jens Köditz, Hengyuan Lang

Journal:

Inorganica Chimica Acta

Année:

1994

Langue:

english

Fichier:

PDF, 576 KB

english, 1994

7

Synthetic Elaboration of N-Substituents in Thioamides

Alan R. Katritzky, Olga Denisko, Hengyuan Lang

Journal:

Année:

1995

Langue:

english

Fichier:

PDF, 574 KB

english, 1995

8

Novel and convenient routes to substituted pyrroles and imidazoles

Alan R. Katritzky, Lie Zhu, Hengyuan Lang, Olga Denisko, Zuoquan Wang

Journal:

Année:

1995

Langue:

english

Fichier:

PDF, 439 KB

english, 1995

9

XPS-investigation of intramolecular charge transfer in polynitro-aminobenzenes

Wang Jianqi, W.U. Wenhui, Zeng Minxiu, Lang Hengyuan

Journal:

Journal of Electron Spectroscopy and Related Phenomena

Année:

1988

Langue:

english

Fichier:

PDF, 523 KB

english, 1988

10

Novel routes to 4-substituted N,N-dialkylanilines, N-alkylanilines and anilines

Alan R. Katritzky, Hengyuan Lang, Xiangfu Lan

Journal:

Année:

1993

Langue:

english

Fichier:

PDF, 615 KB

english, 1993

11

Benzotriazole-assisted β-lithiation of vinyl ethers

Alan R. Katritzky, Alexey V. Ignatchenko, Xiangfu Lan, Hengyuan Lang, Christian V. Stevens, Andreas Opitz, Rainer Koch, Ernst Anders

Journal:

Année:

1994

Langue:

english

Fichier:

PDF, 681 KB

english, 1994

12

Formation of 1-(2-aminophenyl)-5-ethoxy-4-methyl-3-phenylpyrazole and 4-methyl-3-phenylpyrazolo-[5,1-b]benzimidazole via an unusual enzotriazole ring opening

Alan R. Katritzky, Zuoquan Wang, Hengyuan Lang, Peter J. Steel

Journal:

Chemistry of Heterocyclic Compounds

Année:

1996

Langue:

english

Fichier:

PDF, 396 KB

english, 1996

13

A new route to N-substituted heterocycles

Alan R. Katritzky, Hengyuan Lang, Xiangfu Lan

Journal:

Année:

1993

Langue:

english

Fichier:

PDF, 634 KB

english, 1993

14

Benzotriazolylmethylaminosilanes: Novel azomethine ylide equivalents

Alan R. Katritzky, Jens Köditz, Hengyuan Lang

Journal:

Année:

1994

Langue:

english

Fichier:

PDF, 605 KB

english, 1994

15

o-(.alpha.-Benzotriazolylalkyl)phenols: Novel Precursors for the Preparation of 1,1-Bis(2-hydroxyaryl)alkanes

Katritzky, Alan R., Zhang, Zhongxing, Lang, Hengyuan, Lan, Xiangfu

Journal:

Journal of Organic Chemistry

Année:

1994

Langue:

english

Fichier:

PDF, 484 KB

english, 1994

16

Aminal exchange

Katritzky, Alan R., Yannakopoulou, Konstantina, Lang, Hengyuan

Journal:

Journal of the Chemical Society Perkin Transactions 2

Année:

1994

Langue:

english

Fichier:

PDF, 417 KB

english, 1994

17

Novel and Convenient Routes to Functionalized Alkynyl Ketones from 1-(Benzotriazol-1-yl)propargyl Ethyl Ethers

Katritzky, Alan R., Lang, Hengyuan

Journal:

Journal of Organic Chemistry

Année:

1995

Langue:

english

Fichier:

PDF, 948 KB

english, 1995

18

Novel Syntheses of α,β-Unsaturated Esters, α,β-Unsaturated γ-Lactones, and 2-Alkoxypyrroles via 1,2,4-Triazole-Stabilized Allenic Anions

Katritzky, Alan R., Feng, Daming, Lang, Hengyuan

Journal:

Journal of Organic Chemistry

Année:

1997

Langue:

english

Fichier:

PDF, 357 KB

english, 1997

19

Convenient Syntheses of Functionalized Dialkyl Ketones and Alkanoylsilanes: 1-(Benzotriazol-1-yl)-1-phenoxyalkanes as Alkanoyl Anion Equivalents

Katritzky, Alan R., Lang, Hengyuan, Wang, Zuoquan, Lie, Zhu

Journal:

Journal of Organic Chemistry

Année:

1996

Langue:

english

Fichier:

PDF, 328 KB

english, 1996

20

Stereoselective Syntheses of β,γ-Unsaturated Esters and γ-Lactones: 1-(Benzotriazol-1-yl)-3-(diphenylphosphoryl)-1-ethoxy-1-propene, a Protected CCH 2 CO 2 Et Synthon Equivalent

Katritzky, Alan R., Feng, Daming, Lang, Hengyuan

Journal:

Journal of Organic Chemistry

Année:

1997

Langue:

english

Fichier:

PDF, 224 KB

english, 1997

21

Novel and Convenient Synthesis of Aroyl-, Heteroaroyl-, Alkenoyl-, and Alkynoylsilanes

Katritzky, Alan R., Wang, Zuoquan, Lang, Hengyuan

Journal:

Organometallics

Année:

1996

Langue:

english

Fichier:

PDF, 202 KB

english, 1996

22

Benzotriazole-Mediated Conversions of Aromatic and Heteroaromatic Aldehydes to Functionalized Ketones

Katritzky, Alan R., Lang, Hengyuan, Wang, Zuoquan, Zhang, Zhongxing, Song, Huimin

Journal:

Journal of Organic Chemistry

Année:

1995

Langue:

english

Fichier:

PDF, 742 KB

english, 1995

23

Generalization of the Benzotriazole-Mediated Introduction of N-Substituents into Amides

Katritzky, Alan R., Ignatchenko, Alexey V., Lang, Hengyuan

Journal:

Journal of Organic Chemistry

Année:

1995

Langue:

english

Fichier:

PDF, 441 KB

english, 1995

24

Regioselectivity of the Reactions of Heteroatom-Stabilized Allyl Anions with Electrophiles

Katritzky, Alan R., Piffl, Michaela, Lang, Hengyuan, Anders, Ernst

Journal:

Chemical Reviews

Année:

1999

Langue:

english

Fichier:

PDF, 3.29 MB

english, 1999

25

3,3-Diaryl-3H-2,1-benzoxathiole 1-oxides: new sultine colour-formers for carbonless imaging

Katritzky, Alan R., Zhang, Zhongxing, Lang, Hengyuan, Jubran, Nusrallah, Leichter, Louis M., Sweeny, Norman

Journal:

Journal of Materials Chemistry

Année:

1997

Langue:

english

Fichier:

PDF, 539 KB

english, 1997

26

Conversions of 2-aminopyridines into 5-substituted derivatives mediated by 1-hydroxymethylbenzotriazole

Katritzky, Alan R., El-Zemity, Saad, Lang, Hengyuan

Journal:

Journal of the Chemical Society Perkin Transactions 1

Année:

1995

Langue:

english

Fichier:

PDF, 772 KB

english, 1995

27

Novel syntheses of 4-alkyl-2( 5H )-thiophenones and 8-phenylimino-1,2,4-triazolo[5,1- c ]- 1,4-thiazines

Katritzky, Alan R, Feng, Daming, Lang, Hengyuan, Qi, Ming, Steel, Peter J

Journal:

Canadian Journal of Chemistry

Année:

1998

Langue:

english

Fichier:

PDF, 282 KB

english, 1998

28

A New and Efficient Conversion of Alkylphenols into the Corresponding Substituted Salicylic Acids

Katritzky, Alan R., Lang, Hengyuan, Lan, Xiangfu

Journal:

Synthetic Communications

Année:

1993

Langue:

english

Fichier:

PDF, 307 KB

english, 1993

29

A Novel and Convenient Preparation of 1-(γ-Aminoalkyl)-Substituted 1,2,4-Triazoles

Katritzky, Alan R., El-Zemity, Saad, Lang, Hengyuan, Kadous, Ezzat A., El-Shazly, Abdallah M.

Journal:

Synthetic Communications

Année:

1996

Langue:

english

Fichier:

PDF, 304 KB

english, 1996

30

α-(Benzotriazol-1-YL)Propargyl Ethyl Ethers: Novel Precursors to Enediynes, Enynes and Dienynes

Katritzky, Alan R., Zhang, Zhongxing, Lang, Hengyuan

Journal:

Synthetic Communications

Année:

1996

Langue:

english

Fichier:

PDF, 544 KB

english, 1996

31

A Novel and Convenient Route to (1H-1,2,4-Triazol-1-ylmethyl)phenols, Anilines, N-Alkylanilines and N,N-Dialkylanilines

R. Katritzky, Alan, El-Zemity, Saad, Lang, Hengyuan

Journal:

Année:

1994

Langue:

english

Fichier:

PDF, 240 KB

english, 1994

32

AN UNEXPECTED FORMATION OF DIETHYL TRANS-2,3- PIPERAZINEDICARBOXYLATES

Katritzky, Alan R., Wang, Zuoquan, Lang, Hengyuan

Journal:

Heterocyclic Communications

Année:

1996

Langue:

english

Fichier:

PDF, 913 KB

english, 1996

33

The Origins of the Benzotriazole Project, Its Versatility Illustrated by a New -C=CHCH+OEt Synthon, and Novel Syntheses of α,β-Unsaturated Aldehydes and Ketones, Furans, Pyrroles and Allyl Ethers

Katritzky, Alan R., Wu, Hong, Xie, Linghong, Rachwal, Stanislaw, Rachwal, Bogumila, Jiang, Jinlong, Zhang, Guifen, Lang, Hengyuan

Journal:

Année:

1995

Fichier:

PDF, 1.24 MB

1995

34

SPIE Proceedings [SPIE International Seminar on 3-D Holography - Kiev, Ukraine (Tuesday 5 September 1989)] Three-Dimensional Holography: Science, Culture, Education - Color reflection holograms with photopolymer plates

Zhang, Jingfang, Ma, Chunrong, Lang, Hengyuan, Jeong, Tung H., Markov, Vladimir B.

Année:

1991

Langue:

english

Fichier:

PDF, 432 KB

english, 1991

35

Lithiation of N-Substituted Benzotriazoles

R. Katritzky, Alan, V. Ignatchenko, Alexey, Lang, Hengyuan

Journal:

Année:

1995

Langue:

english

Fichier:

PDF, 459 KB

english, 1995