1) DIBAL 2) H20 7.

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Chapter1: Chemical Foundations
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### Organic Chemistry Reaction Guide

#### Reaction 7
**Starting Material:**
![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{C_6H_5-COOCH_3})

**Reagents and Conditions:**
1) DIBAL
2) H₂O

**Description:**
This reaction involves the use of Diisobutylaluminum hydride (DIBAL) followed by hydrolysis. DIBAL is a selective reducing agent that can reduce esters to aldehydes under controlled conditions.

----

#### Reaction 8
**Starting Material:**
![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{Cl-C_6H_4-CH_2CH_2OH})

**Reagents and Conditions:**
CrO₃, H₂SO₄/H₂O

**Description:**
This reaction utilizes chromium trioxide (CrO₃) in a mixture of sulfuric acid and water, known as Jones' reagent, to oxidize the primary alcohol to a carboxylic acid.

----

#### Reaction 9
**Starting Material:**
![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{CH_3CH_2CHBrCH_3})

**Reagents and Conditions:**
1) Ph₃P
2) n-butyllithium

**Products:**
- Product 1: Alkene
- Product 2: Aldehyde

**Description:**
This reaction sequence involves the Wittig reaction, where triphenylphosphine (Ph₃P) and n-butyllithium are used to form an ylide from the bromoalkane, leading to the formation of an alkene and subsequently an aldehyde.

----

#### Reaction 10
**Starting Material:**
![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{C_6H_5COCH_2CH_3})

**Reagents and Conditions:**
1) CH₃CH₂MgBr
2) H₂O

**Description:**
This reaction involves the use of a Grignard reagent (CH₃CH₂MgBr) which adds to the carbonyl group forming an alcohol upon aqueous workup. 

----
Transcribed Image Text:### Organic Chemistry Reaction Guide #### Reaction 7 **Starting Material:** ![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{C_6H_5-COOCH_3}) **Reagents and Conditions:** 1) DIBAL 2) H₂O **Description:** This reaction involves the use of Diisobutylaluminum hydride (DIBAL) followed by hydrolysis. DIBAL is a selective reducing agent that can reduce esters to aldehydes under controlled conditions. ---- #### Reaction 8 **Starting Material:** ![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{Cl-C_6H_4-CH_2CH_2OH}) **Reagents and Conditions:** CrO₃, H₂SO₄/H₂O **Description:** This reaction utilizes chromium trioxide (CrO₃) in a mixture of sulfuric acid and water, known as Jones' reagent, to oxidize the primary alcohol to a carboxylic acid. ---- #### Reaction 9 **Starting Material:** ![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{CH_3CH_2CHBrCH_3}) **Reagents and Conditions:** 1) Ph₃P 2) n-butyllithium **Products:** - Product 1: Alkene - Product 2: Aldehyde **Description:** This reaction sequence involves the Wittig reaction, where triphenylphosphine (Ph₃P) and n-butyllithium are used to form an ylide from the bromoalkane, leading to the formation of an alkene and subsequently an aldehyde. ---- #### Reaction 10 **Starting Material:** ![Starting Material](https://latex.codecogs.com/png.image?\dpi{110}\bg{white}\mathrm{C_6H_5COCH_2CH_3}) **Reagents and Conditions:** 1) CH₃CH₂MgBr 2) H₂O **Description:** This reaction involves the use of a Grignard reagent (CH₃CH₂MgBr) which adds to the carbonyl group forming an alcohol upon aqueous workup. ----
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