I can't possibly guess what files Rhodium is hosting as PDFs (I hope he knows!).
Most of the PDF files at my page has been linked from various posts here at the Hive, so just UTFSE for volume/starting page/year if you want to see if a specific article has been posted.
Of the CTH references, only two has been posted here before:
#1: Post 455063 (https://www.thevespiary.org/talk/index.php?topic=12727.msg45506300#msg45506300)
(Rhodium: "The Discovery of Catalytic Transfer Hydrogenation", Tryptamine Chemistry)
#5: Post 435002 (https://www.thevespiary.org/talk/index.php?topic=9717.msg43500200#msg43500200)
(Aurelius: "Transfer Hydrog. Nitro to amine keep configuration", Methods Discourse)
Reduction of Aldehydes and Ketones to Methylene Derivatives Using Ammonium Formate as a Catalytic Hydrogen Transfer Agent
Siya Ram and Leonard D. Spicer
Tetrahedron Letters 29(31), 3741-3744 (1988) (https://www.thevespiary.org/rhodium/Rhodium/chemistry/cth.carbonyl.deoxygenation.html)
(https://www.thevespiary.org/rhodium/Rhodium/chemistry/cth.carbonyl.deoxygenation.html)
Summary
Various aromatic aldehydes and ketones were reduced to the corresponding hydrocarbons using ammonium formate as the hydrogen source.
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A General Procedure for Mild and Rapid Reduction of Aliphatic and Aromatic Nitro Compounds Using Ammonium Formate as a Catalytic Hydrogen Transfer Agent
Siya Ram and Richard F. Ehrenkaufer
Tetrahedron Letters 25(32), 3415-3418 (1984) (https://www.thevespiary.org/rhodium/Rhodium/pdf/nitro.cth-formate.pdf)
(https://www.thevespiary.org/rhodium/Rhodium/pdf/nitro.cth-formate.pdf)
Abstract
Various aliphatic and aromatic nitro compounds were selectively and rapidly reduced to their corresponding amino derivatives in very good yield using anhydrous ammonium formate as a catalytic hydrogen transfer agent.
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Catalytic Transfer Hydogenation Reactions for Undergraduate Practical Programs
R. W. Hanson
J. Chem. Educ. 74, 430 (1997) (https://www.thevespiary.org/rhodium/Rhodium/pdf/cth.reactions-j.chem.ed.pdf)
(https://www.thevespiary.org/rhodium/Rhodium/pdf/cth.reactions-j.chem.ed.pdf)
Abstract
A brief review of catalytic transfer hydrogenation (CTH) reactions is given. Attention is drawn, particularly, to the utility of ammonium formate as the hydrogen donor in this type of reaction. The reduction of aryl carbonyl compounds to the corresponding methylene derivatives by ammonium formate in the presence of 10% Pd/C at 110°C is compared to their reductive ammonation which occurs at higher temperatures in the absence of the catalyst (the Leuckart reaction). It is suggested that the low cost and simplicity of CTH reactions using ammonium formate as the hydrogen donor, together with the high yields obtained in many cases, make them excellent candidates for inclusion in undergraduate practical programmes. Laboratory instructions are given for the reduction of nitrobenzene to aniline (isolated as benzanilide), benzophenone to diphenylmethanol and fluorenone to fluorene, in all cases using ammonium formate as the hydrogen donor and 10% Pd/C as the catalyst. Thin layer chromatography shows that in each case the product is homogeneous; the yields are essentially quantitative.
Catalytic Hydrogen Transfer Reductions Using Ammonium Formate - A Review
Brindaban C. Ranu, Arunkanti Sakkar, Sankar K. G. and K. Ghosh
J. Indian Chem. Soc. 75, 690-694 (1998) (https://www.thevespiary.org/rhodium/Rhodium/chemistry/cth.af.review.html)
(https://www.thevespiary.org/rhodium/Rhodium/chemistry/cth.af.review.html)
Abstract
An account of recent developments on selective reduction of several important functional groups by catalytic transfer hydrogenation using ammonium formate and palladium or nickel is presented. This includes reduction of nitro alcohols, ?,?-unsaturated nitroalkenes, quinoline and isoquinoline, carbonyl functionalities, carbon-carbon double bond in conjugation to carbonyl, sulfonyl and phosphonate moieties, and epoxides. Deoxygenation of heteroaromatic N-oxides and deprotection of 1,3-dibenzyluracils have also been addressed.
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Transfer Hydrogenation: Stereospecific Reduction of Nitroalkanes to Amines
Anthony G. M. Barrett and Christopher D. Spilling
Tetrahedron Letters 29(45), 5733-5734, (1988) (https://www.thevespiary.org/rhodium/Rhodium/chemistry/nitro2amine.cth.pd-af.html)
(https://www.thevespiary.org/rhodium/Rhodium/chemistry/nitro2amine.cth.pd-af.html)
Abstract
A series of nitroalkanes were converted into the corresponding amines with retention of configuration by transfer hydrogenation using ammonium formate and Pd/C.
This article has been posted before in Post 435002 (https://www.thevespiary.org/talk/index.php?topic=9717.msg43500200#msg43500200)
(Aurelius: "Transfer Hydrog. Nitro to amine keep configuration", Methods Discourse)
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Ammonium Formate in Organic Synthesis: A Versatile Agent in Catalytic Hydrogen Transfer Reductions
Siya Ram, Richard E. Ehrenkaufer
Synthesis 91-95 (1988) (https://www.thevespiary.org/rhodium/Rhodium/pdf/ammonium.formate.cth.review.pdf)
(https://www.thevespiary.org/rhodium/Rhodium/pdf/ammonium.formate.cth.review.pdf)
Applications of ammonium formate in organic synthesis are reviewed.
1. Introduction
2. Reduction of Functional Groups
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000499369-file_fdlo.gif)2.1. Initial Studies
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000499369-file_fdlo.gif)2.2. Azides
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000499369-file_fdlo.gif)2.3. Nitro Groups
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000499369-file_fdlo.gif)2.4. Nitriles
3. Dehalogenation of Aromatic Chlorocarbons
4. Deprotection of Functional Groups
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000499369-file_fdlo.gif)4.1. Deprotection of Polymer and Carbobenzyloxy Group from Protected Peptides
(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000499369-file_fdlo.gif)4.2. Deprotection of O-Benzyl Group
5. Regioselective Synthesis of 1-Olefins
6. Miscellaneous Applications and Other Formic Acid Derivatives
7. Conclusion