WO2008125911A2 - Hydrogen splitting composition - Google Patents

Hydrogen splitting composition Download PDF

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Publication number
WO2008125911A2
WO2008125911A2 PCT/IB2007/004577 IB2007004577W WO2008125911A2 WO 2008125911 A2 WO2008125911 A2 WO 2008125911A2 IB 2007004577 W IB2007004577 W IB 2007004577W WO 2008125911 A2 WO2008125911 A2 WO 2008125911A2
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WO
WIPO (PCT)
Prior art keywords
aryl
alkyl
cycloalkyl
sub
forms
Prior art date
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PCT/IB2007/004577
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English (en)
French (fr)
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WO2008125911A3 (en
WO2008125911A8 (en
Inventor
Douglas W. Stephan
Preston A. Chase
Gregory C. Welch
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Stephan Consulting Corp
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Stephan Consulting Corp
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Filing date
Publication date
Priority to EP07873357A priority Critical patent/EP2091957A4/en
Priority to AU2007350983A priority patent/AU2007350983A1/en
Priority to BRPI0716462-9A2A priority patent/BRPI0716462A2/pt
Priority to US12/514,901 priority patent/US8299284B2/en
Priority to CN200780042370XA priority patent/CN102066390A/zh
Priority to MX2009005127A priority patent/MX2009005127A/es
Priority to JP2009536823A priority patent/JP2010509393A/ja
Priority to CA2669545A priority patent/CA2669545C/en
Application filed by Stephan Consulting Corp filed Critical Stephan Consulting Corp
Publication of WO2008125911A2 publication Critical patent/WO2008125911A2/en
Publication of WO2008125911A8 publication Critical patent/WO2008125911A8/en
Anticipated expiration legal-status Critical
Publication of WO2008125911A3 publication Critical patent/WO2008125911A3/en
Priority to US13/618,790 priority patent/US8642812B2/en
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/50—Organo-phosphines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0272—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/16—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr
    • B01J27/18—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr with metals other than Al or Zr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0255—Phosphorus containing compounds
    • B01J31/0267—Phosphines or phosphonium compounds, i.e. phosphorus bonded to at least one carbon atom, including e.g. sp2-hybridised phosphorus compounds such as phosphabenzene, the other atoms bonded to phosphorus being either carbon or hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0272—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255
    • B01J31/0275—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255 also containing elements or functional groups covered by B01J31/0201 - B01J31/0269
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B31/00—Reduction in general
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02—Boron compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/50—Organo-phosphines
    • C07F9/5022—Aromatic phosphines (P-C aromatic linkage)

Definitions

  • the present invention in general relates to compounds and compositions capable of splitting dihydrogen. and in particular to compounds and compositions dissociating dihydrogen and use of said compounds in metal-free hydrogenation. These species are also capable of transfer hydrogenation.
  • H molecular hydrogen
  • transition metal sy stems that effect hetcrolytic cleavage of hy drogen at a metal center have been unco ⁇ ered.
  • a metal hydride is formed w ith concurrent protonation of an amido ligand.
  • Non-lransition metal catalysts for hydrogenation reactions are all but unknown.
  • KO/Bu has been shown to act as a catalyst effecting the addition of H 2 to benzophenone under forcing conditions of 200°C and greater than 300 bar
  • H 2 Organoeatahsts have been dev eloped for hydrogcnations of enones and imincs: however, such systems do not employ Vh directly but rather a surrogate such as a l lanUsch ester as the stoichiometric source of hydrogen.
  • the development of nonmetal hydrogenation catalysts hinges on the disccn ery of sy stems that react cleanly with H 2 . but fuse are known.
  • a compound is provided that is operative as a hydrogenation catalyst.
  • the compound is capable of homogenous liquid phase catalysis exclusive of a noble metal.
  • a compound has the formula:
  • each of R 1 . R 2 , R 3 and R 4 is independently C 6 -C 18 aryl-, C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent, C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alky! substiluent.
  • R 5 is C 6 -C 18 aryl-, C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent.
  • R and R' are each independently C 6 -C 18 aryl-, C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent.
  • A is N, P, S. or O with the proviso that when A is S or O.
  • R 7 is a nullity
  • M is B. Al. Ga or In.
  • a composition operative as a hydrogenation catalyst includes a compound having the formula: where each of R 1 and R 2 is independently C 6 -C 18 aryl-, C 5 -C 8 cycloaikyl-. C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent. C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substituent. C 4 C 20 branched alkyl-, C 16 -C 30 linear alkyl-. RO-. -NRR'. -PRR', -SR.
  • R 6 is C 1 -C 30 alkyl-, C 6 -C 18 aryl-. C 5 -C 8 cycloalkyl-. RO-. - NRR', -PRR ⁇ -SR. a fluoro substituted form thereof, a perfluoro substituted form thereof, H or F; where R and R' are each independently C 6 -C 18 aryl-.
  • A is N, P, S, or O with the proviso that when A is S or O, R 2 is a nullity; in fluid communication with a composition having the formula:
  • R 5 and R- is independently C 6 -C 18 aryl-.
  • C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent
  • C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substituent.
  • R 9 and R 10 is independently C 6 -C 18 aryl-, C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent.
  • RO-, -NRR', -PRR' is independently C 6 -C 18 aryl-, C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent.
  • R and R' are each independently Cr 1 -C i 8 aryl-.C 5 -C 8 eveloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent, C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substituent, C 4 -C 20 branched alkyl-, C 2 -C 30 linear alkyl-.
  • a compound is also provided that is an addition reaction product of a compound of formula I and dihydrogen (H 2 ). The compound has the formula:
  • each of R 1 , R 2 . R 3 and R 4 is independently C 6 -C 18 aryl-. C 5 -C 8 cycloalkyl-. C 6 -C 18 aryl having at least one C 1 -C 20 afkyl substituent, C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substiiuent, C 4 -C 20 branched alkyl-. C 16 -C 30 linear alky!-. RO-. -NRR'. -PRR'. -SR. fluoro substituted forms thereof, and perfluoro forms thereof: and R 5 is C 6 -C 18 aryl-. C 5 -C 8 cycloalkyl-.
  • C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent
  • C 5 -C 8 cycloalkyl having at least one C 1 - C 20 alkyl substituent, C 3 -C 20 branched alkyl-.
  • A is N. P. S, or O with the proviso that when A is -S. R 2 is a nullity; and M is B. AK Ga or In
  • a process of catalytic hydrogenation of a substrate comprising: independently compound I. a mixture of 11 and III. compound III. a mixture of II, HI-V, compound IV. or compound Vl together with dihydrogen and solvent form a catalyst whereby hydrogenation of a substrate is effected.
  • the present invention has utility as compounds and compositions capable of dissociating dihydrogen and reversibly binding hydrogen atoms.
  • a sacrificial dihydrogen source such as primary or secondary amines, primary or secondary phosphines, alcohols and thiols arc also is operative according to the present invention to reduce substrates.
  • a compound is provided that is the reaction product of a sterically hindered Lewis acid with a sterically hindered Lewis base via an intermediate linker group therebetween.
  • the prototypical form of an inventive compound I is a reaction product of linker separated sterically hindered phosphine and a sterically hindered borane.
  • An inventive compound has the formula:
  • each of R 1 , R 2 , R 3 and R 4 is independently C 6 -C 18 aryl-.
  • R 5 is C 6 -C 18 aryl-.
  • C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent.
  • C 5 -C 8 cycloalkyl having at least one C1- C 20 alkyl substituent, C 3 -C 20 branched alky!-.
  • a bimolccttlar composition according to the present invention capable of dissociating hydrogen and rcvcrsibly binding hydrogen atoms includes in a mixture of a phosphine and a borane incapable of reaction owing to steric hindrance.
  • Sterically hindered phosphine is readily replaced with a nitrogen, oxygen, or sulfur analog as shown in formula II.
  • Sterically hindered borane is readily replaced with an aluminum, gallium, or indium analog as shown in formula III. Lesser sterically hindered systems exhibit reactivity at temperatures dependent on the nature of the compounds.
  • Lewis compounds operative herein have the formulae II and III respectively:
  • each of R 1 and R 2 is independently C 6 -C 18 aryl-.
  • C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent.
  • R 6 is C 1 -C 30 alky)-, C 6 -C 18 aryl-, C 5 -C 8 cycloalkyl-, RO-. - NRR', -PRR'. -SR. a fluoro substituted form thereof, a perfluoro substituted form thereof, H or F; where R and R' are each independently C 6 -C 18 aryl-, C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent.
  • C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substituent, C 4 -C 20 branched alkyl-.
  • A is N, P, S. or O with the proviso that when A is S or O, R 2 is a nullity.
  • R4, R 5 and R 7 is independently C 6 -C 18 aryh C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent, C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substituent.
  • a sterically hindered perfliiorinated composition of formula 111 has hydrogen catalytic activity independent of the presence of a compound of formula 11.
  • each of R 1 , R 2 , R 3 and R is independently C 6 -C 18 aryl C 5 -C 8 cycloalkyl-, C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent, C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substituent, C 4 -C 20 branched alkyk C 16 -C 30 linear alkyl-.
  • A is N. P. S, or O with the proviso that when A is S. R 2 is a nullity; and M is B. Al, Ga or In.
  • hydrogenation occurs through the interaction of a composition of formula II with a transition metal cation of Ti, Zr. or Hf when A is F or N.
  • the transition metal cation is generated in situ by alkyl group abstraction from an organometallic composition of the formula:
  • each of R 8 . R 9 and R 10 is independently C 6 -C 18 aryl-. C 5 -C 8 cycloalkyl-. C 6 -C 18 aryl having at least one C 1 -C 20 alkyl substituent. C 5 -C 8 cycloalkyl having at least one C 1 .C 20 alkyl substituent. C 4 -C 20 branched alkyl-, amide, alknxide, phenoxide. phosphinimide. cyclopentadienyl, indenyl, fluoreny] derivatives. RO-, -NRR'. -PRR', -SR.
  • R and R' are each independently C 6 -C 18 aryl-.
  • C 5 -C 8 cycloalkyl-, C 6 -C 18 ary] having at least one C 1 -C 20 alkyl subslituent
  • C 5 -C 8 cycloalkyl having at least one C 1 -C 20 alkyl substituent, C- 1 -C 20 branched alkyl-, C 2 -C 30 linear alkyl-.
  • fluoro substituted forms thereof, and pcrlluoro forms thereof and
  • R 11 is C 1 -C 20 alkyl linear or branched with the proviso that R 1 1 is a better leaving group than any of R 8 .
  • compositions and compounds of formulae I- V are operative in hydrogenation catalysis in a neat liquid substrate, in a solution containing substrate, or applied as coating on an inert support.
  • the catalyst (0.1-20 mol %) is weighed into a 50 ml round bottomed Schlenk flask and slurried in toluene (2 ml). The reaction is charged with H 2 . The slurry is then allowed to equilibrate at the desired temperature under an atmosphere of H? with rapid stirring. ⁇ solution of substrate (1.0 mmol) in toluene (2 ml) is added via syringe. Reaction time and temperature vary with substrate. In all cases, the crude mixtures of the completed reactions are pure to the limits of NMR spectroscopy. The product is purified by all volatiles being removed in vacuo trap to trap vacuum distillation or filtration through a small plug of silica to remove residual catalyst.
  • the H 2 pressure is - 5 atm. Aliquots are obtained at periodic intervals by rapidly cooling the reaction in a water bath and venting the H> pressure. Samples are taken by pipette in the glove box. The reaction is re-pressurized using the above procedure. Upon full conversion, the reaction is poured onto a 10 cm ptug of silica (200 mesh) and eluted with 2: 1 hexanes/cthyl acetate (200 ml). If the amine is not fully soluble in the reaction mixture or the hexanes/ethyl acetate solvent, CH 2 CI 2 (3 x 5 ml) is used to wash the reaction vessel. The collected solvent is removed in vacuo to obtain the product in the time and yield shown in Table
  • R tert-butyl (denoted as compound 5) and (2.4,6-Me 3 C 6 H 2 ) 3 (denoted as compound 6).
  • the product is collected as a white solid.
  • a 20 mL vial is charged with compound 5 (0.099 g, 0.150 mmol) or a molar equivalent of composition 6, toluene (10 ml.) and diethyl ether (1 mL), forming a white slurry.
  • the mixture is cooled to -35 C C and 3.0 M MeMgBr in diethyl ether (0.060 mL. 0.180 mmol) is added via syringe. Immediate formation of a clear yellow solution is observed.
  • the reaction is allowed to warm Io room temperature and stirred for 12 h. All volaliles arc removed in vacuo and the product extracted with hexanes (3 x 5 mL) and filtered through celite. The solvent is removed in vacuo to give a yellow solid.
  • Example 13 Conversion of m-l,2,3-triplicnylaziridine to ⁇ V-1.2-diDhenvlethvl-JV-phenvl amine with B(C6F5l3 and (2,4,6-Me 3 C 6 H 2 ) 3 P.
  • Patent documents and publications mentioned in the specification are indicative of the levels of those skilled in the art to which the invention pertains. These documents and publications are incorporated herein bv reference to the same extent as if each indiv idual document or publication was specifically and individually incorporated herein by reference. [00311 The foregoing description is illustrative of particular embodiments of the im eniion. but is not meant to be a limitation upon the practice thereof. The following claims, including all equivalents thereof, are intended to define the scope of the im ention.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
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PCT/IB2007/004577 2006-11-14 2007-11-14 Hydrogen splitting composition Ceased WO2008125911A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP2009536823A JP2010509393A (ja) 2006-11-14 2007-11-14 水素開裂組成物
BRPI0716462-9A2A BRPI0716462A2 (pt) 2006-11-14 2007-11-14 "composto operativo como catalisador de hidrogenação dissociar reversivelmente e ligar hidrgênio e processo de hidrogenaçõ catalítica de substrato"
US12/514,901 US8299284B2 (en) 2006-11-14 2007-11-14 Frustrated lewis pair compositions
CN200780042370XA CN102066390A (zh) 2006-11-14 2007-11-14 分离氢的组合物
MX2009005127A MX2009005127A (es) 2006-11-14 2007-11-14 Composicion para separacion de hidrogeno.
EP07873357A EP2091957A4 (en) 2006-11-14 2007-11-14 HYDROGEN CLEAVAGE COMPOSITION
AU2007350983A AU2007350983A1 (en) 2006-11-14 2007-11-14 Hydrogen splitting composition
CA2669545A CA2669545C (en) 2006-11-14 2007-11-14 Frustrated lewis pair compositions
US13/618,790 US8642812B2 (en) 2006-11-14 2012-09-14 Frustrated Lewis pair compositions

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US86568406P 2006-11-14 2006-11-14
US60/865,684 2006-11-14
US89655707P 2007-03-23 2007-03-23
US60/896,557 2007-03-23

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US12/514,901 A-371-Of-International US8299284B2 (en) 2006-11-14 2007-11-14 Frustrated lewis pair compositions
US13/618,790 Continuation US8642812B2 (en) 2006-11-14 2012-09-14 Frustrated Lewis pair compositions

Publications (3)

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WO2008125911A2 true WO2008125911A2 (en) 2008-10-23
WO2008125911A8 WO2008125911A8 (en) 2009-04-23
WO2008125911A3 WO2008125911A3 (en) 2011-03-03

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PCT/IB2007/004577 Ceased WO2008125911A2 (en) 2006-11-14 2007-11-14 Hydrogen splitting composition

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US (2) US8299284B2 (https=)
EP (1) EP2091957A4 (https=)
JP (1) JP2010509393A (https=)
KR (1) KR20090078835A (https=)
CN (1) CN102066390A (https=)
AU (1) AU2007350983A1 (https=)
CA (1) CA2669545C (https=)
MX (1) MX2009005127A (https=)
SG (1) SG176482A1 (https=)
WO (1) WO2008125911A2 (https=)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016097734A1 (en) * 2014-12-16 2016-06-23 Isis Innovation Limited Solid-phase catalysts comprising supported frustrated lewis pairs
WO2016168914A1 (en) * 2015-04-23 2016-10-27 UNIVERSITé LAVAL Process for the functionalization of sp2-h carbons using frustrated lewis pair catalysts
WO2017100904A1 (en) * 2015-12-15 2017-06-22 UNIVERSITé LAVAL Precatalysts and process for the metal-free functionalization of sp2 carbons using the same
US10821429B2 (en) 2015-12-15 2020-11-03 UNIVERSITé LAVAL Precatalysts and process for the metal-free functionalization of SP2 carbons using the same
US11685817B2 (en) 2019-06-04 2023-06-27 Dow Silicones Corporation Bridged frustrated Lewis pairs as thermal trigger for reactions between Si-H and epoxide
US12084547B2 (en) 2019-06-04 2024-09-10 Dow Silicones Corporation Bridged frustrated lewis pairs as thermal trigger for reactions between Si—H and Si—O—Si
US12104019B2 (en) 2019-06-04 2024-10-01 Dow Silicones Corporation Bridged frustrated Lewis pairs as thermal trigger for reactions between Si—H and alpha-beta unsaturated esters
US12116459B2 (en) 2019-06-04 2024-10-15 Dow Silicones Corporation Thermally initiated acid catalyzed reaction between silyl hydride and silyl ether and/or silanol
US12129339B2 (en) 2019-06-04 2024-10-29 Dow Silicones Corporation Bridged frustrated Lewis pairs as thermal trigger for reactions between Si—H and Si—OR
US12152148B2 (en) 2019-06-04 2024-11-26 Dow Silicones Corporation Thermally initiated acid catalyzed reaction between silyl hydride and siloxane
US12247105B2 (en) 2019-06-04 2025-03-11 Dow Silicones Corporation Thermally initiated acid catalyzed reaction between silyl hydride and alpha-beta unsaturated esters

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WO2021146093A1 (en) * 2020-01-14 2021-07-22 University Of Vermont And State Agricultural College Methods of preparing primary phosphine products using lewis acid catalysts

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016097734A1 (en) * 2014-12-16 2016-06-23 Isis Innovation Limited Solid-phase catalysts comprising supported frustrated lewis pairs
WO2016168914A1 (en) * 2015-04-23 2016-10-27 UNIVERSITé LAVAL Process for the functionalization of sp2-h carbons using frustrated lewis pair catalysts
US10988488B2 (en) 2015-04-23 2021-04-27 UNIVERSITé LAVAL Process for the functionalization of sp2-H carbons using frustrated lewis pair catalysts
WO2017100904A1 (en) * 2015-12-15 2017-06-22 UNIVERSITé LAVAL Precatalysts and process for the metal-free functionalization of sp2 carbons using the same
US10258976B2 (en) 2015-12-15 2019-04-16 UNIVERSITé LAVAL Precatalysts and process for the metal-free functionalization of SP2 carbons using the same
US10821429B2 (en) 2015-12-15 2020-11-03 UNIVERSITé LAVAL Precatalysts and process for the metal-free functionalization of SP2 carbons using the same
US11685817B2 (en) 2019-06-04 2023-06-27 Dow Silicones Corporation Bridged frustrated Lewis pairs as thermal trigger for reactions between Si-H and epoxide
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US12247105B2 (en) 2019-06-04 2025-03-11 Dow Silicones Corporation Thermally initiated acid catalyzed reaction between silyl hydride and alpha-beta unsaturated esters

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US20130018207A1 (en) 2013-01-17
EP2091957A4 (en) 2012-03-21
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US8299284B2 (en) 2012-10-30
WO2008125911A3 (en) 2011-03-03
CN102066390A (zh) 2011-05-18
WO2008125911A8 (en) 2009-04-23
EP2091957A2 (en) 2009-08-26
CA2669545A1 (en) 2008-10-23
AU2007350983A1 (en) 2008-10-23
KR20090078835A (ko) 2009-07-20
SG176482A1 (en) 2011-12-29
MX2009005127A (es) 2009-07-03
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