Organic Preparations and Procedures International (OPPI)
Volume 31 Number I February 1999

Recent Advance in the Synthesis of Indan Systems by B.-C. Hong* and S. Sarshar........................ 1
Preparation and Partial Deacetylation of Dihydroquercetm Acetates by E. Kiehlmann *.................. 37
OPPI Briefs (J.-P.Anselme, Editor).................................................................................................... 99
(x-Vinylation of Tertiary Active Hydrogen Compounds by R. A. Bunce* andS. E. Bums.... 99

An Improved Large Scale Synthesis of2,3-Dihydroxyterephthalic Acid and Dimethyl
2,3-Dihydroxyterephthalate by B.-C. Chen* ,M. S. Bednan, J. E. Sundeen, Z. J. Zhang,
T. J. Coalfield and G. S. Bisacchi........................................................................................... 106

A Facile Synthesis of 3-Chloro-4-(2',2',2'-trifluoroethoxy)benzonitrile by R. Zhou*
andX. Qian and W. Zhou....................................................................................................... 110

A Facile and Efficient Method for the Regenration of Carbonyl Compounds from
Hydrazones and Oximes by Oxone® Under Heterogeneous Conditions
by A. R. Hajipour" andN.Mahboubghah........................................................................ '.'...... 112

The Regioselective Nitration of Ot,P-Unsaturated Nitriles with Nitrogen Oxides
by A. Navarro-Ocana *, E. Banana, D. Lopez-Gonzalei and M. Jimenet-Estrada.............. 117

The Selenium Dioxide Oxidation of 2,3- and 3,4-Dimethylpyridines by A. D. Dunn......... 120

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Organic Preparations and Procedures International (OPPI)

Volume 31 Number 2 April 1999

Synthesis of a-Fluoro Aldehydes and Ketones. A Review by F. A. Davis* and P. V. N. Kasu....... ...........125

Selective Protection of the Various Hydroxy Groups of Cholic Acid and Derivatives. A Review
byH.GaoandJ.R.Dias*....................................................................................................... .......................145

ipso-Nitration ofHexamethoxy[(2.1)(3)metacyclophane, A Calixarene Analogous Macrocyclic
Metacyclophane byT. Yamato", Y. KinosakiandF. Zhang................................................ .........................167

Synthesis of New Wc-Dioxime Derivatives of (tert)-Butyl)calixarene and some Metal Complexes
by H.Deligoz.......................................................................................................................... .....................173

A New Reduction of the Enone System of 18B-Glycyrrhetic Acid by R. Pellegata, M. Pinw,
G.Pifferi and C. Farina ......................................................................................................... ..................181

Adducts ofPiperazine with Nitric Oxide by H. A. Hrabie*, J. E. Saavedm, K. M. Davies and
L.K.Keefer...................................................................................................................... .........................189

Reaction of toPhenol-A Diglycidyl Ether with Substituted Phenols by S. Jost, L. VanbeiUnghen,
P. HendersonandJ. Marchand-Brynaert*............................................................................. ...................193

OPPI Briefs (J.-P. Anselme, Editor).................................................................................................. ..201

Stereoselective Synthesis of(E)-Vinyl Aryl Sulfides via Hydrozirconation of Terminal
Alkynes by X. Huang, P. ZhongandW.-r. Guo................................................................. ........................201

Conversion of Acid Chlorides to Aldehydes by Oxidation of Alkoxyaluminum Inter-
mediates with Pyridinium Chlorochromate or Pyridinium Dichromate by J. S. Cha*,
J. M. Kirn, J. H. Chun. 0. 0. Kwon, S. Y. Kwon andS. W. Han.......................................... .....................204

Expedient Synthesis of(IR,3S)-(+)-3-(Trifluoromethyl)camphonanic Acid and
Derivatives by W. Dinowshi* andK. Piasecka-Maciejewska................................................ ..................207

(R)-2-Hydroxy-3-triphenylmethylthiopropanoic Acid, an Intermediate in the Synthesis
of Hydroxy Analogs of Oxytocin by K. Wisniewski............................................................ .....................21 I

Preparation of N-Tritylpyrrolidine and N-Tritylpiperidine by M. R. Akula and
G.W.Kabalka....................................................................................................................... ..................214

Preparation of p-Ketophosphonates and their Vinylogues by Oxidation of the
Corresponding Alcohols by E. L. MUller, A. M. Modro and T. A. Modro"......................... ..................216

A Convenient Reduction of Unsaturated Bicyclic Anhydrides by F. Csende* and
G..Stajer................................................................................................................................... .............220

A Simple Procedure for the Alkylation of 4-Hydroxycoumarins at C-3 Position by
G. Toth", S.Molnar, T. Tamas and 1. Borbely........................................................................ ...........222

A One-step Synthesis of l-Hydroxy-10-methyl-9(IOH)-acridinone byG.M. Coppola...... .....................225

Isomerization ofLongifolene to Isolongifolene Catalyzed by Montmorillonite Clay
by A. R. Ramesha", S. BhatandK. R. Prabhu........................................................................ ...........227

Improved Synthesis of bis(2,2,2-Trifluoroethyl) Phosphorochloridate by R. A. Bowman.
J. R. StockandJ. A. Jackson*.................................................................................................. ...230

A Simple and Efficient Synthesis ofy-Aminobutyric Acid (Gaba) Derivatives
by V. Dryanska* and 1. Pashkuleva......................................................................................... .....232

Synthesis of N-Protected 2-Aminohexanesulfonic Acid by V. Constantmolt-Kokotou....... ...............237

Michaelis-Becker Synthesis of to(2,2,2-Trifluoroethyl)phosphono Esters
by G. M. Cis^ewski andJ. A. Jackson*................................................................................... .......240

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Organic Preparations and Procedures International (OPPI)
Volume 31, Number 3, June 1999

Synthesis of Polypodal Diphenylphosphine Ligands. A Review by D. Lclurenti andM. Santelli*.............. 245

"One-pot" Synthesis of Dimethyl ll-Substitiited-5-hydroxy-l H -pyrazol-4-yl]phosphonates
by P. C. Miller* and J. M. Molyneaux................................................................................................... 295

Synthesis of New Condensed 2-Amino-4H-pyran-3-carbonitriles and of 2-Aminoquinohne-
3-carbonitriles by S. M. Al-Monsawi, Y. M. Elkholy, M. A. Mohammadand
M. H. Elnagdi ......................................................................................................................................... 305

OPPI Briefs (J.-P. Anselme, Editor)....................................................................................................... 315

Nitration Studies on 4-Pheny l-5-substituted-l,3-dioxanes as Chloramphenicol
Intermediates by B. G. Hazra , V. S. Pore, S. P. Mayhhate, B. V. Bapat, V. K. Gumaste
and A, S. Rao ......................................................................................................................................... 315

An Efficient Synthesis ofMequitazine by K Guminski, V. Fabre, P. Lesimple and
T. Imbert...................................................................................................................................................319

Friedel-Crafts Acylation with Malonic Acids in Polyphosphoric Acid by O. Renault,
P. DallemagneandS. Rault........................................................................................................................ 324

Synthesis of New Types of Lewis Acids Rearrangement ofStilbene Oxides by Y. Ohba,
K. ltoandT. Nagasawa............................................................................................................................. 328

A New, Facile Method for Detrifluoroacetylation of Esters with Triethylamine Pretreated
Silica Gel by L OuandD. Bai*................................................................................................................... 333

Benzyltriphenylphosphonium Dichromate as a Mild Reagent for the Oxidation of
Organic Compounds by A. R. Hajipour*, 1. Mohammadpoor-Baltorkand K. Niknam............................. 335

Preparation and Characterization of New Substituted 5-Methoxy-2-styry l-4- pyrones
byZ. Stiplosek, M. Sindler-KulykandK. Jakopcic*..................................................................................... 341

Simple, High Yield Preparation of 3-Nitro-l,2-phenylenediamine by V. Milata* and
J.Salon......................................................................................................................................................... 347

Improved Synthesis of Symmetrical Dipyrromethenes hyB. Tu, C. Wang and J.Ma*....................................... 349

Transformation of6-Halopenicillanates into 3-Halo-4-oxoazetidine Derivatives
by 1. Lukic..................................................................................................................................................... 352

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