Pre Reactivity of Alkyl Halides

Topics: Solubility, Temperature, Solvent Pages: 3 (796 words) Published: June 19, 2013
Reactivity’s of Some Alkyl Halides- SN2 & SN1

A. Johnson
8/28/12
CHM236

Objective: To test the ten compounds found in the physical data table that follows, and observe them by categorizing the reactions as Sn1 and SN2. Physical data:
CompoundM.W. (g/mol)Melting Point (C°)Boiling Point (C°)Density (g/mL)SolubilitySafety Considerations 2-chlorobutane92.57-140680.87very slightly soluble in cold waterIrritant with skin, lung, and eyes. 2-bromobutane137.03-11291.21.25 Irritant with skin, lung, and eyes. 1-chlorobutane92.57-123790.88insoluble in water, miscible with ETOH Irritant with skin, lung, and eyes. 1-bromobutane137.03-112.4101.41.2676Insoluble in water 2-chloro-2methylpropane92.57-2551.50.87n/a

crotyl chloride90.55-65730.9491insoluble in cold water benzyl chloride126.59-431791.1partially soluble in diethyl ether/methanol, insoluble in water bromobenzene157.02-30.6156.21.495soluble in methanol/diethyl ether bromocyclohexane163.06-56.51661.3604insoluble in water bromocylopentane149.04n/a137 insoluble in water

Sodium Iodine in acetone149.8966113043.67soluble in acetone/ETOH Silver Nitrate in ethanol169.872124444.35soluble in water

Calculations & Chemical Reactions:

Sample Table:
Compound NameSN1SN2Time for precipitant
2-chlorobutaneyY
2-bromobutaneyY
1-chlorobutaneY
1-bromobutaneY
2-chloro-2methylpropane
crotyl chloride
benzyl chloride
bromobenzene
bromocyclohexane
bromocyclopentae

Procedure: For both procedures, you will need a 50 ̊ C water bath □ fill a 100 mL beaker half full with water,
□ place it on a hot plate and heat it until the water is 50-55 ̊ C. If the bath becomes too hot, you can periodically lower the temperature by adding some ice or cool water to the bath. SN2
□ Place about 0.1 mL of each of the halides in small labeled test tubes. □ Then...
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