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678538

Sigma-Aldrich

(−)-Ipc2B(allyl)borane solution

1 M in pentane

Synonym(s):

(-)-Ipc2B(allyl) solution, (−)-B-Allyldiisopinocampheylborane solution

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About This Item

Linear Formula:
(C10H17)2BCH2CH=CH2
CAS Number:
85116-38-7
Molecular Weight:
326.37
UNSPSC Code:
12352002
PubChem Substance ID:
24885432
NACRES:
NA.22

optical activity

[α]20/D −35 to ±5°, c = 1

concentration

1 M in pentane

bp

35-36 °C

density

0.638 g/mL at 25 °C

storage temp.

−20°C

SMILES string

C[C@H]1[C@@H](C[C@@H]2C[C@H]1C2(C)C)B(CC=C)[C@@H]3C[C@@H]4C[C@H]([C@H]3C)C4(C)C

InChI

1S/C23H39B/c1-8-9-24(20-12-16-10-18(14(20)2)22(16,4)5)21-13-17-11-19(15(21)3)23(17,6)7/h8,14-21H,1,9-13H2,2-7H3/t14-,15-,16+,17+,18-,19-,20-,21-/m1/s1

InChI key

ZIXZBDJFGUIKJS-RLEROFIGSA-N

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Application

This allylboration reagent is a convenient, salt-free, stable solution of a chiral allyl borane for asymmetric allylation of aldehydes leading to chiral homoallylic alcohols.

Other Notes

Material may become hazy upon cooler storage, this will not affect use
Under refrigerator storage, these salt-free, Ipc2B(allyl) reagents do not show any appreciable decrease in selectivity is observed after several months. They exhibit excellent reactivity and reactions can be performed at 5°C, even in water.

accessory

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Central nervous system, Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

-56.2 °F - closed cup

Flash Point(C)

-49 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SHBL1948
SHBJ6237
SHBH5863
SHBG1511V
SHBD7763V

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Articles

Asymmetric Allylboration Using Ipc2B(allyl)

Asymmetric allylboration of aldehydes is an extremely important method for preparation of homoallylic alcohols, as evidenced in numerous complex natural product syntheses.

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