(3,3-Diisopropoxypropyl)triphenylphosphonium bromide

CAS 72931-54-5 C₂₇H₃₄BrO₂P 501.4 g/mol Catalogue item Boronic Acids & Coupling Reagents

Structure of (3,3-Diisopropoxypropyl)triphenylphosphonium bromide, CAS 72931-54-5 — Structure · C27H34BrO2P

CAS number: 72931-54-5
Molecular formula: C₂₇H₃₄BrO₂P
Molecular weight: 501.4 g/mol
Standard packing: 1kg / 25kg / 100kg

CAS 72931-54-5, (3,3-Diisopropoxypropyl)triphenylphosphonium bromide, is a phosphonium salt – the ylide precursor for Wittig chemistry (C27H34BrO2P).

Phosphonium salts are charged as dried solids, because water consumes the ylide as fast as it forms.

The formula C27H34BrO2P resolves to 27 carbons with 2 oxygens, one phosphorus and one bromine. With 27 carbons the lipophilicity dominates: solubility in polar media falls away and the work-up is usually a phase separation.

Handling and storage

Keep sealed and dry. A wet salt consumes base before it consumes the aldehyde, which shows up as a low conversion.

Ordering

Standard packing 1kg / 25kg / 100kg. Other unit weights are quoted per lot and confirmed in writing before the material is packed. Nothing on this page should be read as a guaranteed minimum. The number that applies is the one on the certificate for the lot you receive.

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Specification

CAS	72931-54-5
Formula	C₂₇H₃₄BrO₂P
Molecular weight	501.4 g/mol
Packing	1kg / 25kg / 100kg
Assay	lot specific, on COA
Appearance	see COA
Storage	cool, dry, inert

Ordering

Catalogue items ship from stock or are made to order, whichever the lot status requires. A gram-scale sample is available before a kilo lot is committed.

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Supplied for laboratory and industrial use. Not for drug, cosmetic or household use.

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Entry	(3,3-Diisopropoxypropyl)triphenylphosphonium bromide
CAS	72931-54-5
Typical lead time	Stock or 2–4 weeks
Documentation	COA, SDS, spec sheet

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(3,3-Diisopropoxypropyl)triphenylphosphonium bromide (72931-54-5)

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